Literature DB >> 31417806

(3,5-Di-methyl-adamantan-1-yl)ammonium methane-sulfonate (memanti-nium mesylate): synthesis, structure and solid-state properties.

Mihaela Tuksar1, Mirta Rubčić2, Ernest Meštrović1.   

Abstract

The asymmetric unit of the title compound, C12H22NCH3O3S-, consists of three (3,5-di-methyl-adamantan-1-yl)ammonium cations, C12H22N+, and three methane-sulfonate anions, CH3O3S-. In the crystal, the cations and anions associate via N-H⋯O hydrogen bonds into layers, parallel to the (001) plane, which include large supra-molecular hydrogen-bonded rings.

Entities:  

Keywords:  IR spectroscopy; X-ray diffraction; crystal structure; differential scanning calorimetry (DSC); memantine; thermogravimetric analysis (TGA)

Year:  2019        PMID: 31417806      PMCID: PMC6690476          DOI: 10.1107/S2056989019009988

Source DB:  PubMed          Journal:  Acta Crystallogr E Crystallogr Commun


Chemical context

Memantine or 3,5-di­methyl­adamantane-1-yl­amine is an active pharmaceutical ingredient which acts as an uncompetitive NMDA receptor antagonist (Reisberg et al., 2003 ▸; Rammes et al., 2008 ▸; Parsons et al., 2013 ▸). The compound was approved for the treatment of moderate-to-severe Alzheimer’s disease and is currently marketed as the chloride salt. The crystal structure of memanti­nium chloride 0.1-hydrate has previously been described (Lou et al., 2009 ▸). Herein we report the structure of an alternative salt, (3,5-di­methyl­adamantan-1-yl)ammonium methane­sulfonate (I) (memanti­nium mesylate), developed with the aim of producing a material with physico-chemical properties superior to those of memanti­nium chloride.

Structural commentary

The asymmetric unit of (3,5-di­methyl­adamantan-1-yl)ammonium methane­sulfonate, (I) (Fig. 1 ▸) consists of three crystallographically independent (3,5-di­methyl­adamantan-1-yl)ammonium cations and three methane­sulfonate anions. The structure of the cations is rigid, with all four six-membered rings of the adamantane core of the (3,5-di­methyl­adamantan-1-yl)ammonium cations assuming a typical chair conformation. No significant geometrical differences are observed between the independent cations, or between the methane­sulfonate anions. The (3,5-di­methyl­adamantan-1-yl)ammonium cations are achiral. They possess a plane of symmetry by which two enanti­omorphic halves of the ion, containing chiral centers (C3 and C5, C15 and C17, C27 and C29), are reflections of each other.
Figure 1

ORTEP plot of the title compound. Displacement ellipsoids are drawn at the 50% probability level and H atoms are shown as spheres of arbitrary small radii.

Supra­molecular features

The crystal packing of the title compound is characterized by hydrogen-bonding inter­actions between the protonated amino groups of cations and the oxygen atoms of the methane­sulfonate anions (Table 1 ▸, Fig. 2 ▸). Each hydrogen atom of the protonated amino groups of the (3,5-di­methyl­adamantan-1-yl)ammonium cations is engaged in hydrogen bonding with the neighbouring methane­sulfonate anions. While each of the established N—H⋯O hydrogen bonds has a characteristic D 1 1(2) graph-set motif, they combine into larger (12) motifs (Fig. 2 ▸). Assemblies formed in such a way are supported by weaker C—H⋯O contacts, as shown in Fig. 2 ▸. Such connectivity leads to the formation of supra­molecular layers parallel to the (001) plane, which involve large hydrogen-bonded rings (Fig. 3 ▸).
Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯A D—HH⋯A DA D—H⋯A
N1—H1A⋯O7i 0.90 (2)1.92 (2)2.819 (2)177 (2)
N1—H1B⋯O10.90 (2)1.94 (2)2.833 (2)179 (2)
N1—H1C⋯O40.89 (2)1.96 (2)2.844 (2)170 (2)
N2—H2A⋯O2ii 0.88 (2)1.92 (2)2.7991 (18)179 (2)
N2—H2B⋯O9ii 0.87 (2)1.94 (2)2.8090 (19)175 (2)
N2—H2C⋯O60.90 (2)1.90 (2)2.7923 (19)177 (2)
N3—H3A⋯O30.90 (2)1.91 (2)2.7717 (19)159 (2)
N3—H3B⋯O50.90 (2)1.89 (2)2.7752 (19)172 (2)
N3—H3C⋯O8i 0.89 (2)1.90 (2)2.785 (2)172 (2)
C39—H39B⋯O6iii 0.962.593.423 (3)145

Symmetry codes: (i) ; (ii) ; (iii) .

Figure 2

(a) A view of the D 1 1(2) and (12) motifs formed via N—H⋯O hydrogen bonds. (b) Crystal packing of the title compound showing relevant hydrogen bonds and C—H⋯O contacts. Hydrogen bonds are indicated by black dashed lines, while the C—H⋯O contacts are shown as green dashed lines.

Figure 3

Crystal packing of the title compound showing the layers parallel to (001) based on hydrogen bonded rings. View of the structure: (a) along the [100] direction; (b) along the [001] direction. Hydrogen bonds are indicated by dashed lines.

Database survey

A search of the Cambridge Structural Database (CSD version 5.40, update of November 2018; Groom et al., 2016 ▸) for structures containing the (3,5-di­methyl­adamantan-1-yl)ammonium cation gave four hits: (3,5-dimethyl-1-adamant­yl)ammonium chloride hydrate (DUCYAC; Lou et al., 2009 ▸), 3,5-di­methyl­adamantane-1-ammonium cucurbit[8]uril chloride hexa­cosa­hydrate (GAWLIC, Hostaš et al., 2016 ▸), cucurbit[7]uril memantine clathrate chloride hydrate (SULZIJ, McInnes et al., 2010 ▸) and 3,5-di­methyl­adamantan-1-yl­ammonium 2,4,6-triiso­propyl­benzene­sulfonate (YECDIW, Tkachev et al., 2017 ▸). Among these, the structure of 3,5-di­methyl­adamantan-1-yl­ammonium 2,4,6-triiso­propyl­benzene­sulfonate shows the greatest similarity in its hydrogen-bonding motifs with those observed in the title compound. In the structure of YECDIW, N—H⋯O hydrogen bonds having a D 1 1(2) graph-set motif dominate the crystal packing. However, in contrast to the hydrogen-bonded layers in the title structure, a complex chain-like hydrogen-bonding network is formed. Such differences can be attributed, at least to some extent, to the distinct steric demands of the anions present in these structures.

Hirshfeld surface analysis

The Hirshfeld surfaces for the cations and anions constituting the asymmetric unit of (I) were calculated using CrystalExplorer17 (Turner et al., 2017 ▸) and are shown in Fig. 4 ▸. Mapping the d norm values on the corresponding Hirshfeld surface allows a detailed analysis of hydrogen bonds and short inter­molecular contacts (Spackman & Jayatilaka, 2009 ▸). In this case, red spots indicate N—H⋯O hydrogen bonds, blue regions correspond to positive d norm values, and white areas indicate contacts of equal length to the sum of the van der Waals radii, i.e. d norm is 0. While the Hirshfeld surfaces for the three cations appear similar to each other, the two-dimensional fingerprint plots reveal distinctive differences between them. The full two-dimensional fingerprint plots along with the decomposed ones, displaying the contributions of the relevant contacts, are shown in Fig. 5 ▸. It can be seen that the N3-containing cation has the largest contribution of H⋯O/O⋯H contacts (23.9%), while for the N1- and N2-containing cations this contribution amounts to 14.9 and 17.1%, respectively. Analysis of the fingerprint plots for the anions reveals that they have fairly similar environments within the crystal and consequently a comparable distribution of the inter­molecular contacts (Fig. 5 ▸).
Figure 4

Views of the Hirshfeld surfaces mapped over d norm for: (a) the N1-containing cation; (b) the S1-containing anion, (c) the N2-containing cation; (d) the S2-containing anion, (e) the N3-containing cation and (f) the S3-containing anion (range: −0.6178 to 1.7852 a.u.).

Figure 5

The fingerprint plots for the ions constituting the asymmetric unit of (I): (a) the N1-containing cation; (b) the N2-containing cation, (c) the N3-containing cation; (d) the S1-containing anion, (e) the S2-containing anion and (f) the S3-containing anion. Left side: full fingerprint plot, middle: contribution of the H⋯O/O⋯H contacts, and right side: contribution of the H⋯H contacts to the inter­molecular inter­actions.

Synthesis and crystallization

To a solution of 10.0 g of (3,5-di­methyl­adamantan-1-yl)ammonium chloride (supplied by PLIVA Croatia Ltd.) in 300 ml of water, 140 ml of toluene was added and the pH adjusted to about 10.7 by using 40% NaOH (aq). The toluene and water layers were separated. To the toluene solution of 3,5-di­methyl­adamantane-1-yl­amine, 3.3 ml of methane­sulfonic acid at 293–298 K was added. The reaction mixture was stirred at 293–298 K for 1 h, cooled to 273–278 K and stirred at that temperature for 1 h. The resulting crystals were filtered off, washed with toluene and dried at 313 K/20 mbar for about 15 h. The obtained solid was slurried in 125 ml of acetone at 293–298 K for about 18 h, filtered off, washed with acetone and dried at 313 K/20 mbar for about 15 h. The product was recrystallized from i-propyl acetate, yielding crystals suitable for single-crystal X-ray diffraction, yield 11.7 g (92%).

Thermal analysis

The thermal stability of the title compound was investigated in the solid state by thermogravimetric analysis (TGA) and by differential scanning calorimetry (DSC). Thermogravimetric analysis was performed on TA Instruments TGA in closed aluminium pans with one hole on the crucible under a nitro­gen flow (50 mL min−1) with a heating rate of 10°C min−1 in the temperature range 25–300°C. Thermogravimetric analysis does not reveal any weight loss during heating up to about 200°C, whereupon a change in mass is observed that can be associated with the thermal decomposition of the sample (Fig. 6 ▸ a). DSC analysis of (I) reveals two thermal events (Fig. 6 ▸ b). The first endotherm at about 125°C suggests that the sample is experiencing a phase transition, as no weight loss can be observed on the corresponding TG curve in this temperature region. The second strong endotherm, observed on the DSC curve at about 210°C, can be ascribed to the melting point of the new phase. Existence of a new, stable phase was confirmed via a PXRD experiment, where comparison of the powder patterns of the starting sample (I) and the one obtained by heating (I) at about 130°C for 17 h revealed significant differences (Fig. 7 ▸). Additional confirmation for this conclusion is found in the DSC curve of the material obtained after heating (I), where only one endothermic event can be observed, the one appearing at 210°C and corresponding to its melting point.
Figure 6

(a) TG curve of (I); (b) DSC curve of (I).

Figure 7

PXRD pattern of the bulk sample of I (red), simulated pattern for (I) (green), and PXRD pattern of the new phase obtained by heating (I) at about 130°C for 17 h (blue).

IR spectroscopy

The infrared (IR) spectrum of title compound was recorded by using the ATR (attenuated total reflectance) technique on a PerkinElmer Spectrum Two instrument. The spectrum of (I) displays a broad band positioned at ca 2900 cm−1, which corresponds to N—H stretching vibrations of the protonated amino group of the (3,5-di­methyl­adamantan-1-yl)ammonium cations superimposed with the C—H stretching vibrations of the adamantane skeleton and methyl groups of the methane­sulfonate anion (Fig. 8 ▸). The bands corresponding to the S—O asymmetric and symmetric stretching modes appear at 1179 and 1042 cm−1, respectively (Başköse et al., 2012 ▸). The band at 780 cm−1 is associated with the C—S stretching vibration, whereas the one at 540 cm−1 corresponds to the bending mode of the SO3 moiety (Başköse et al., 2012 ▸).
Figure 8

IR spectrum of the title compound.

Refinement

Crystal data, data collection and structure refinement details are summarized in Table 2 ▸. Hydrogen atoms bonded to carbon atoms of the adamantane core were refined as riding with C—H = 0.98 Å for methine C atoms (C7—H7, C19—H19 and C31—H31) and C—H = 0.97 Å for the methyl­ene H atoms, both with U iso(H) = 1.2U eq(C). Hydrogen atoms bonded to carbon atoms of the methyl groups of both the memantine cations and the methane­sulfonate anions were refined as rotating rigid groups with C—H = 0.96 Å and U iso(H) = 1.5U eq(C). Hydrogen atoms bonded to nitro­gen atoms were found in the difference-Fourier maps at final steps of the refinement and refined with U iso(H) = 1.2U eq(N). Their coordinates were refined independently, but N—H distances were restrained to 0.89 (2) Å.
Table 2

Experimental details

Crystal data
Chemical formulaC12H22N+·CH3O3S
M r 275.40
Crystal system, space groupTriclinic, P
Temperature (K)295
a, b, c (Å)11.7761 (2), 11.8731 (2), 18.2788 (3)
α, β, γ (°)92.501 (2), 94.696 (2), 116.609 (2)
V3)2268.09 (8)
Z 6
Radiation typeCu Kα
μ (mm−1)1.92
Crystal size (mm)0.32 × 0.21 × 0.11
 
Data collection
DiffractometerOxford Diffraction Xcalibur Sapphire3
Absorption correctionMulti-scan (CrysAlis PRO; Rigaku, 2018)
T min, T max 0.200, 1.000
No. of measured, independent and observed [I > 2σ(I)] reflections76762, 8992, 8048
R int 0.062
(sin θ/λ)max−1)0.620
 
Refinement
R[F 2 > 2σ(F 2)], wR(F 2), S 0.047, 0.133, 1.06
No. of reflections8992
No. of parameters523
No. of restraints9
H-atom treatmentH atoms treated by a mixture of independent and constrained refinement
Δρmax, Δρmin (e Å−3)0.86, −0.53

Computer programs: CrysAlis PRO (Rigaku, 2018 ▸), SHELXT (Sheldrick, 2015a ▸), SHELXL2018 (Sheldrick, 2015b ▸) and Mercury (Macrae et al., 2008 ▸).

Crystal structure: contains datablock(s) I. DOI: 10.1107/S2056989019009988/fy2137sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S2056989019009988/fy2137Isup2.hkl Click here for additional data file. TOC graphic. DOI: 10.1107/S2056989019009988/fy2137sup3.tif Click here for additional data file. Supporting information file. DOI: 10.1107/S2056989019009988/fy2137Isup4.cml CCDC reference: 1942388 Additional supporting information: crystallographic information; 3D view; checkCIF report
C12H22N+·CH3O3SZ = 6
Mr = 275.40F(000) = 900
Triclinic, P1Dx = 1.210 Mg m3
a = 11.7761 (2) ÅCu Kα radiation, λ = 1.54184 Å
b = 11.8731 (2) ÅCell parameters from 30823 reflections
c = 18.2788 (3) Åθ = 5.1–72.7°
α = 92.501 (2)°µ = 1.92 mm1
β = 94.696 (2)°T = 295 K
γ = 116.609 (2)°Prism, colorless
V = 2268.09 (8) Å30.32 × 0.21 × 0.11 mm
Oxford Diffraction Xcalibur Sapphire3 diffractometer8992 independent reflections
Radiation source: fine-focus sealed X-ray tube, Enhance (Cu) X-ray Source8048 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.062
Detector resolution: 16.1285 pixels mm-1θmax = 72.9°, θmin = 4.2°
ω scansh = −13→14
Absorption correction: multi-scan (CrysAlis PRO; Rigaku, 2018)k = −14→14
Tmin = 0.200, Tmax = 1.000l = −22→22
76762 measured reflections
Refinement on F2Primary atom site location: dual
Least-squares matrix: fullHydrogen site location: mixed
R[F2 > 2σ(F2)] = 0.047H atoms treated by a mixture of independent and constrained refinement
wR(F2) = 0.133w = 1/[σ2(Fo2) + (0.0822P)2 + 0.429P] where P = (Fo2 + 2Fc2)/3
S = 1.06(Δ/σ)max < 0.001
8992 reflectionsΔρmax = 0.86 e Å3
523 parametersΔρmin = −0.53 e Å3
9 restraints
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes.
xyzUiso*/Ueq
S10.63651 (4)0.78463 (4)0.39086 (2)0.04527 (12)
S20.67423 (4)0.34333 (4)0.38657 (2)0.04606 (12)
S30.12114 (4)0.83219 (4)0.39052 (2)0.04759 (12)
O20.51832 (13)0.79458 (13)0.39206 (8)0.0608 (3)
O60.66922 (13)0.21916 (12)0.38512 (8)0.0615 (3)
O30.63630 (13)0.68285 (13)0.43196 (8)0.0637 (4)
O90.22683 (12)0.95327 (12)0.38131 (8)0.0597 (3)
N20.46247 (14)−0.01597 (13)0.33925 (7)0.0433 (3)
H2A0.4793 (18)−0.0755 (16)0.3563 (11)0.052*
H2B0.3914 (16)−0.0237 (19)0.3549 (11)0.052*
H2C0.5300 (16)0.0593 (15)0.3524 (11)0.052*
N30.84089 (14)0.66545 (13)0.50755 (7)0.0443 (3)
H3A0.7713 (16)0.6768 (19)0.4943 (11)0.053*
H3B0.8237 (19)0.5892 (15)0.4864 (11)0.053*
H3C0.9054 (17)0.7263 (17)0.4886 (11)0.053*
O50.78864 (13)0.43837 (13)0.42985 (9)0.0681 (4)
O80.03123 (14)0.84536 (14)0.43564 (9)0.0701 (4)
O10.66929 (16)0.77755 (15)0.31635 (8)0.0689 (4)
N10.79465 (15)0.63192 (15)0.27752 (8)0.0492 (3)
H1A0.8792 (15)0.6704 (19)0.2924 (11)0.059*
H1B0.7552 (19)0.6784 (19)0.2896 (11)0.059*
H1C0.7541 (19)0.5562 (16)0.2945 (11)0.059*
O40.65613 (18)0.37874 (16)0.31366 (8)0.0799 (4)
O70.06024 (15)0.75862 (18)0.32090 (8)0.0807 (5)
C10.78006 (15)0.61136 (14)0.19499 (8)0.0403 (3)
C130.44439 (15)−0.03377 (14)0.25673 (8)0.0410 (3)
C210.57125 (16)−0.00684 (16)0.22910 (9)0.0466 (3)
H21A0.602030−0.0639540.2488060.056*
H21B0.6338740.0791040.2458970.056*
C20.85215 (15)0.73767 (14)0.16319 (9)0.0437 (3)
H2D0.9418580.7752090.1823020.052*
H2E0.8183260.7950850.1779640.052*
C250.86750 (14)0.67267 (14)0.58989 (8)0.0388 (3)
C80.63814 (16)0.55422 (17)0.16706 (9)0.0495 (4)
H8A0.6037320.6111280.1818340.059*
H8B0.5917000.4745210.1878500.059*
C140.39642 (17)0.05787 (16)0.22769 (9)0.0465 (4)
H14A0.4581030.1441830.2444200.056*
H14B0.3161970.0413080.2464250.056*
C330.74579 (15)0.58585 (15)0.62134 (9)0.0465 (4)
H33A0.7160380.4996800.6002140.056*
H33B0.6796570.6113940.6085770.056*
C30.83830 (16)0.71802 (15)0.07895 (9)0.0461 (3)
C90.83407 (18)0.52124 (16)0.17324 (9)0.0494 (4)
H9A0.7891490.4417140.1945160.059*
H9B0.9238130.5574570.1921030.059*
C290.77116 (18)0.59194 (16)0.70548 (10)0.0515 (4)
C170.55484 (18)−0.02435 (18)0.14428 (9)0.0518 (4)
C200.34628 (19)−0.17022 (16)0.23234 (10)0.0550 (4)
H20A0.265548−0.1879000.2507510.066*
H20B0.376024−0.2281550.2519380.066*
C70.62339 (17)0.53292 (18)0.08302 (10)0.0570 (4)
H70.5325710.4961200.0642820.068*
C100.69578 (17)0.65902 (18)0.05044 (10)0.0551 (4)
H10A0.6612080.7162860.0641690.066*
H10B0.6850280.645408−0.0029130.066*
C270.94396 (19)0.81789 (16)0.70574 (10)0.0550 (4)
C280.82115 (19)0.72963 (17)0.73701 (10)0.0547 (4)
H28A0.7561560.7571870.7255150.066*
H28B0.8376950.7348410.7902240.066*
C320.97039 (18)0.63053 (19)0.60735 (10)0.0533 (4)
H32A1.0478820.6857450.5870580.064*
H32B0.9418600.5449710.5855290.064*
C260.91308 (17)0.80841 (14)0.62144 (9)0.0480 (4)
H26A0.8471200.8345880.6096580.058*
H26B0.9888170.8640550.5998130.058*
C150.37718 (19)0.04088 (19)0.14298 (10)0.0541 (4)
C40.89072 (19)0.62571 (18)0.05718 (10)0.0547 (4)
H4A0.9808340.6621370.0751950.066*
H4B0.8824630.6124700.0038750.066*
C160.50501 (19)0.06612 (19)0.11542 (10)0.0560 (4)
H16A0.4944760.0567050.0619620.067*
H16B0.5674000.1525380.1313480.067*
C50.8188 (2)0.49778 (17)0.08899 (10)0.0581 (4)
C310.99688 (19)0.6358 (2)0.69101 (11)0.0613 (5)
H311.0626270.6082600.7030340.074*
C341.04425 (19)0.7718 (2)0.72352 (11)0.0667 (5)
H34A1.1224810.8262260.7035910.080*
H34B1.0631910.7767120.7765540.080*
C180.4547 (2)−0.16083 (19)0.11936 (11)0.0642 (5)
H18A0.442643−0.1733040.0659540.077*
H18B0.484759−0.2192500.1378100.077*
C300.8754 (2)0.55030 (19)0.72313 (11)0.0622 (5)
H30A0.8933690.5534960.7761300.075*
H30B0.8455130.4636850.7027620.075*
C220.2800 (2)−0.0963 (2)0.11844 (11)0.0669 (5)
H22A0.265956−0.1084760.0650380.080*
H22B0.199032−0.1140680.1366080.080*
C110.9113 (2)0.84445 (19)0.04648 (12)0.0637 (5)
H11A0.9062090.830026−0.0060450.096*
H11B0.9992800.8829590.0671920.096*
H11C0.8742290.8995320.0579530.096*
C60.6764 (2)0.44274 (18)0.06038 (11)0.0675 (6)
H6A0.6656220.4281490.0070730.081*
H6B0.6294460.3621810.0801790.081*
C190.3283 (2)−0.18780 (18)0.14795 (11)0.0624 (5)
H190.265373−0.2749720.1314570.075*
C370.7589 (2)0.9253 (2)0.43596 (13)0.0725 (6)
H37A0.8395300.9238550.4346500.109*
H37B0.7435340.9331650.4862610.109*
H37C0.7605640.9960400.4116380.109*
C240.6820 (2)0.0025 (3)0.11616 (13)0.0750 (6)
H24A0.716007−0.0489080.1390550.112*
H24B0.7411060.0902040.1280230.112*
H24C0.669158−0.0168100.0636790.112*
C390.1879 (3)0.7482 (2)0.43919 (13)0.0772 (6)
H39A0.1214420.6666670.4469640.116*
H39B0.2300090.7942100.4859350.116*
H39C0.2487200.7378120.4113440.116*
C230.3304 (3)0.1337 (3)0.11357 (13)0.0826 (7)
H23A0.3907200.2185500.1318580.124*
H23B0.2487160.1146110.1297630.124*
H23C0.3225310.1260830.0606760.124*
C360.6483 (2)0.5065 (2)0.73711 (14)0.0810 (7)
H36A0.6143090.4222610.7135770.122*
H36B0.5868110.5382700.7284930.122*
H36C0.6663880.5052950.7891610.122*
C380.5456 (2)0.3353 (3)0.43141 (15)0.0786 (6)
H38A0.5418710.4143550.4300890.118*
H38B0.5568910.3187050.4817140.118*
H38C0.4675370.2686000.4070360.118*
C350.9899 (3)0.9543 (2)0.73805 (14)0.0888 (8)
H35A0.9248010.9802660.7259430.133*
H35B1.0664591.0088650.7178290.133*
H35C1.0072260.9592840.7906530.133*
C120.8726 (4)0.4071 (3)0.06721 (16)0.0966 (9)
H12A0.8607770.3907390.0145330.145*
H12B0.8287340.3291280.0890690.145*
H12C0.9621790.4444890.0843280.145*
U11U22U33U12U13U23
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S20.0469 (2)0.0452 (2)0.0465 (2)0.02134 (17)0.00555 (16)0.00208 (15)
S30.0452 (2)0.0508 (2)0.0449 (2)0.01982 (18)0.00683 (16)0.00448 (16)
O20.0593 (8)0.0671 (8)0.0715 (8)0.0403 (7)0.0124 (6)0.0197 (6)
O60.0610 (8)0.0462 (6)0.0745 (9)0.0241 (6)−0.0017 (6)−0.0025 (6)
O30.0582 (8)0.0571 (7)0.0800 (9)0.0301 (6)−0.0012 (7)0.0199 (6)
O90.0518 (7)0.0555 (7)0.0734 (8)0.0235 (6)0.0180 (6)0.0126 (6)
N20.0448 (7)0.0447 (7)0.0426 (7)0.0218 (6)0.0052 (6)0.0063 (5)
N30.0466 (8)0.0460 (7)0.0408 (7)0.0222 (6)0.0014 (6)0.0012 (5)
O50.0549 (8)0.0566 (7)0.0888 (10)0.0262 (6)−0.0052 (7)−0.0202 (7)
O80.0662 (9)0.0684 (8)0.0819 (10)0.0310 (7)0.0342 (7)0.0145 (7)
O10.0861 (10)0.0835 (9)0.0517 (7)0.0504 (8)0.0150 (7)0.0031 (6)
N10.0524 (8)0.0561 (8)0.0377 (7)0.0238 (7)0.0040 (6)0.0008 (6)
O40.1053 (12)0.0754 (10)0.0541 (8)0.0353 (9)0.0109 (8)0.0192 (7)
O70.0631 (9)0.1011 (12)0.0585 (8)0.0245 (8)−0.0072 (7)−0.0159 (8)
C10.0414 (8)0.0436 (7)0.0347 (7)0.0188 (6)0.0020 (6)0.0012 (5)
C130.0452 (8)0.0406 (7)0.0389 (7)0.0213 (6)0.0030 (6)0.0042 (6)
C210.0471 (9)0.0523 (9)0.0459 (8)0.0277 (7)0.0041 (7)0.0049 (6)
C20.0418 (8)0.0392 (7)0.0460 (8)0.0157 (6)0.0002 (6)0.0008 (6)
C250.0394 (8)0.0398 (7)0.0388 (7)0.0199 (6)0.0019 (6)0.0019 (5)
C80.0396 (8)0.0561 (9)0.0469 (9)0.0163 (7)0.0059 (7)0.0045 (7)
C140.0502 (9)0.0506 (8)0.0477 (8)0.0306 (7)0.0058 (7)0.0076 (7)
C330.0417 (8)0.0416 (8)0.0499 (9)0.0141 (7)0.0029 (7)0.0008 (6)
C30.0453 (8)0.0458 (8)0.0436 (8)0.0175 (7)0.0030 (6)0.0079 (6)
C90.0583 (10)0.0490 (8)0.0482 (9)0.0293 (8)0.0122 (7)0.0101 (7)
C290.0529 (10)0.0469 (8)0.0500 (9)0.0174 (7)0.0119 (7)0.0068 (7)
C170.0551 (10)0.0605 (10)0.0454 (8)0.0310 (8)0.0075 (7)0.0030 (7)
C200.0577 (10)0.0423 (8)0.0570 (10)0.0159 (8)0.0051 (8)0.0049 (7)
C70.0425 (9)0.0619 (10)0.0463 (9)0.0079 (8)−0.0052 (7)0.0014 (7)
C100.0501 (10)0.0640 (10)0.0459 (9)0.0222 (8)−0.0034 (7)0.0089 (7)
C270.0631 (11)0.0425 (8)0.0474 (9)0.0149 (8)0.0012 (8)−0.0042 (7)
C280.0646 (11)0.0566 (10)0.0460 (9)0.0300 (9)0.0108 (8)−0.0003 (7)
C320.0534 (10)0.0683 (11)0.0518 (9)0.0396 (9)0.0055 (7)0.0049 (8)
C260.0532 (9)0.0369 (7)0.0486 (9)0.0162 (7)0.0029 (7)0.0024 (6)
C150.0604 (10)0.0673 (11)0.0453 (9)0.0385 (9)0.0020 (7)0.0099 (7)
C40.0619 (11)0.0598 (10)0.0468 (9)0.0292 (9)0.0168 (8)0.0087 (7)
C160.0650 (11)0.0644 (10)0.0447 (8)0.0335 (9)0.0100 (8)0.0131 (7)
C50.0807 (13)0.0510 (9)0.0505 (9)0.0346 (9)0.0211 (9)0.0042 (7)
C310.0606 (11)0.0860 (13)0.0547 (10)0.0495 (11)−0.0007 (8)0.0110 (9)
C340.0477 (10)0.0842 (14)0.0510 (10)0.0175 (10)−0.0082 (8)0.0000 (9)
C180.0839 (14)0.0612 (11)0.0528 (10)0.0394 (11)0.0032 (9)−0.0076 (8)
C300.0843 (14)0.0586 (10)0.0519 (10)0.0391 (10)0.0062 (9)0.0132 (8)
C220.0564 (11)0.0861 (14)0.0511 (10)0.0291 (10)−0.0084 (8)−0.0019 (9)
C110.0627 (11)0.0570 (10)0.0664 (11)0.0210 (9)0.0078 (9)0.0226 (9)
C60.0829 (14)0.0473 (9)0.0471 (9)0.0088 (9)0.0043 (9)−0.0066 (7)
C190.0633 (11)0.0510 (10)0.0567 (10)0.0146 (9)−0.0034 (9)−0.0094 (8)
C370.0709 (13)0.0549 (11)0.0742 (13)0.0149 (10)0.0018 (11)−0.0047 (9)
C240.0710 (14)0.1042 (17)0.0612 (12)0.0486 (13)0.0164 (10)0.0057 (11)
C390.1087 (19)0.0742 (13)0.0702 (13)0.0590 (14)0.0121 (12)0.0177 (11)
C230.1070 (19)0.1152 (19)0.0631 (13)0.0822 (17)0.0089 (12)0.0256 (12)
C360.0736 (15)0.0771 (14)0.0745 (14)0.0141 (12)0.0283 (12)0.0176 (11)
C380.0623 (13)0.0978 (17)0.0868 (16)0.0438 (13)0.0230 (11)0.0076 (13)
C350.122 (2)0.0487 (11)0.0681 (13)0.0174 (12)0.0026 (13)−0.0133 (9)
C120.157 (3)0.0811 (16)0.0877 (17)0.0780 (18)0.0545 (18)0.0141 (13)
S1—O31.4497 (13)C10—H10A0.9700
S1—O21.4503 (13)C10—H10B0.9700
S1—O11.4548 (14)C27—C341.527 (3)
S1—C371.754 (2)C27—C351.531 (3)
S2—O41.4427 (15)C27—C281.532 (3)
S2—O61.4478 (13)C27—C261.541 (2)
S2—O51.4491 (14)C28—H28A0.9700
S2—C381.748 (2)C28—H28B0.9700
S3—O71.4453 (15)C32—C311.528 (2)
S3—O91.4480 (14)C32—H32A0.9700
S3—O81.4511 (14)C32—H32B0.9700
S3—C391.751 (2)C26—H26A0.9700
N2—C131.4983 (19)C26—H26B0.9700
N2—H2A0.878 (15)C15—C161.531 (3)
N2—H2B0.873 (15)C15—C221.532 (3)
N2—H2C0.896 (15)C15—C231.534 (3)
N3—C251.5026 (19)C4—C51.539 (3)
N3—H3A0.904 (15)C4—H4A0.9700
N3—H3B0.896 (15)C4—H4B0.9700
N3—H3C0.890 (15)C16—H16A0.9700
N1—C11.5008 (19)C16—H16B0.9700
N1—H1A0.901 (15)C5—C121.528 (3)
N1—H1B0.897 (16)C5—C61.535 (3)
N1—H1C0.893 (15)C31—C301.520 (3)
C1—C91.524 (2)C31—C341.526 (3)
C1—C21.525 (2)C31—H310.9800
C1—C81.526 (2)C34—H34A0.9700
C13—C211.516 (2)C34—H34B0.9700
C13—C201.528 (2)C18—C191.519 (3)
C13—C141.529 (2)C18—H18A0.9700
C21—C171.540 (2)C18—H18B0.9700
C21—H21A0.9700C30—H30A0.9700
C21—H21B0.9700C30—H30B0.9700
C2—C31.532 (2)C22—C191.533 (3)
C2—H2D0.9700C22—H22A0.9700
C2—H2E0.9700C22—H22B0.9700
C25—C331.520 (2)C11—H11A0.9600
C25—C261.520 (2)C11—H11B0.9600
C25—C321.521 (2)C11—H11C0.9600
C8—C71.529 (2)C6—H6A0.9700
C8—H8A0.9700C6—H6B0.9700
C8—H8B0.9700C19—H190.9800
C14—C151.538 (2)C37—H37A0.9600
C14—H14A0.9700C37—H37B0.9600
C14—H14B0.9700C37—H37C0.9600
C33—C291.535 (2)C24—H24A0.9600
C33—H33A0.9700C24—H24B0.9600
C33—H33B0.9700C24—H24C0.9600
C3—C41.533 (3)C39—H39A0.9600
C3—C111.533 (2)C39—H39B0.9600
C3—C101.533 (2)C39—H39C0.9600
C9—C51.534 (2)C23—H23A0.9600
C9—H9A0.9700C23—H23B0.9600
C9—H9B0.9700C23—H23C0.9600
C29—C361.527 (3)C36—H36A0.9600
C29—C301.532 (3)C36—H36B0.9600
C29—C281.533 (2)C36—H36C0.9600
C17—C241.524 (3)C38—H38A0.9600
C17—C161.530 (2)C38—H38B0.9600
C17—C181.536 (3)C38—H38C0.9600
C20—C191.532 (3)C35—H35A0.9600
C20—H20A0.9700C35—H35B0.9600
C20—H20B0.9700C35—H35C0.9600
C7—C61.520 (3)C12—H12A0.9600
C7—C101.530 (3)C12—H12B0.9600
C7—H70.9800C12—H12C0.9600
O3—S1—O2112.16 (8)C27—C28—H28B109.3
O3—S1—O1112.49 (9)C29—C28—H28B109.3
O2—S1—O1112.24 (9)H28A—C28—H28B107.9
O3—S1—C37106.48 (10)C25—C32—C31108.64 (14)
O2—S1—C37106.90 (11)C25—C32—H32A110.0
O1—S1—C37106.03 (11)C31—C32—H32A110.0
O4—S2—O6112.33 (9)C25—C32—H32B110.0
O4—S2—O5112.53 (10)C31—C32—H32B110.0
O6—S2—O5111.99 (8)H32A—C32—H32B108.3
O4—S2—C38106.23 (12)C25—C26—C27109.43 (13)
O6—S2—C38107.04 (11)C25—C26—H26A109.8
O5—S2—C38106.18 (11)C27—C26—H26A109.8
O7—S3—O9112.24 (10)C25—C26—H26B109.8
O7—S3—O8112.80 (10)C27—C26—H26B109.8
O9—S3—O8111.98 (8)H26A—C26—H26B108.2
O7—S3—C39106.65 (12)C16—C15—C22108.80 (16)
O9—S3—C39105.98 (11)C16—C15—C23110.50 (17)
O8—S3—C39106.65 (11)C22—C15—C23111.15 (18)
C13—N2—H2A108.9 (13)C16—C15—C14108.38 (14)
C13—N2—H2B108.9 (13)C22—C15—C14108.47 (15)
H2A—N2—H2B108.3 (18)C23—C15—C14109.49 (16)
C13—N2—H2C107.2 (13)C3—C4—C5111.38 (15)
H2A—N2—H2C109.0 (18)C3—C4—H4A109.4
H2B—N2—H2C114.4 (18)C5—C4—H4A109.4
C25—N3—H3A111.5 (13)C3—C4—H4B109.4
C25—N3—H3B111.5 (13)C5—C4—H4B109.4
H3A—N3—H3B105.7 (18)H4A—C4—H4B108.0
C25—N3—H3C111.2 (13)C17—C16—C15111.81 (15)
H3A—N3—H3C105.8 (18)C17—C16—H16A109.3
H3B—N3—H3C110.8 (19)C15—C16—H16A109.3
C1—N1—H1A106.7 (14)C17—C16—H16B109.3
C1—N1—H1B107.8 (14)C15—C16—H16B109.3
H1A—N1—H1B113 (2)H16A—C16—H16B107.9
C1—N1—H1C107.3 (14)C12—C5—C9109.66 (18)
H1A—N1—H1C112.9 (19)C12—C5—C6110.9 (2)
H1B—N1—H1C109 (2)C9—C5—C6108.75 (16)
N1—C1—C9108.80 (13)C12—C5—C4110.77 (18)
N1—C1—C2109.46 (12)C9—C5—C4108.30 (15)
C9—C1—C2110.08 (13)C6—C5—C4108.38 (16)
N1—C1—C8108.44 (13)C30—C31—C34109.47 (17)
C9—C1—C8110.26 (14)C30—C31—C32110.15 (16)
C2—C1—C8109.76 (13)C34—C31—C32108.73 (16)
N2—C13—C21109.02 (12)C30—C31—H31109.5
N2—C13—C20108.75 (13)C34—C31—H31109.5
C21—C13—C20110.00 (14)C32—C31—H31109.5
N2—C13—C14108.56 (12)C31—C34—C27110.87 (15)
C21—C13—C14110.25 (13)C31—C34—H34A109.5
C20—C13—C14110.23 (14)C27—C34—H34A109.5
C13—C21—C17109.86 (13)C31—C34—H34B109.5
C13—C21—H21A109.7C27—C34—H34B109.5
C17—C21—H21A109.7H34A—C34—H34B108.1
C13—C21—H21B109.7C19—C18—C17110.38 (15)
C17—C21—H21B109.7C19—C18—H18A109.6
H21A—C21—H21B108.2C17—C18—H18A109.6
C1—C2—C3110.01 (12)C19—C18—H18B109.6
C1—C2—H2D109.7C17—C18—H18B109.6
C3—C2—H2D109.7H18A—C18—H18B108.1
C1—C2—H2E109.7C31—C30—C29110.54 (15)
C3—C2—H2E109.7C31—C30—H30A109.5
H2D—C2—H2E108.2C29—C30—H30A109.5
N3—C25—C33109.30 (12)C31—C30—H30B109.5
N3—C25—C26108.86 (12)C29—C30—H30B109.5
C33—C25—C26109.96 (13)H30A—C30—H30B108.1
N3—C25—C32108.23 (13)C15—C22—C19110.50 (15)
C33—C25—C32110.02 (13)C15—C22—H22A109.5
C26—C25—C32110.44 (14)C19—C22—H22A109.5
C1—C8—C7108.38 (14)C15—C22—H22B109.5
C1—C8—H8A110.0C19—C22—H22B109.5
C7—C8—H8A110.0H22A—C22—H22B108.1
C1—C8—H8B110.0C3—C11—H11A109.5
C7—C8—H8B110.0C3—C11—H11B109.5
H8A—C8—H8B108.4H11A—C11—H11B109.5
C13—C14—C15109.31 (13)C3—C11—H11C109.5
C13—C14—H14A109.8H11A—C11—H11C109.5
C15—C14—H14A109.8H11B—C11—H11C109.5
C13—C14—H14B109.8C7—C6—C5110.54 (14)
C15—C14—H14B109.8C7—C6—H6A109.5
H14A—C14—H14B108.3C5—C6—H6A109.5
C25—C33—C29110.04 (13)C7—C6—H6B109.5
C25—C33—H33A109.7C5—C6—H6B109.5
C29—C33—H33A109.7H6A—C6—H6B108.1
C25—C33—H33B109.7C18—C19—C20109.84 (16)
C29—C33—H33B109.7C18—C19—C22109.75 (18)
H33A—C33—H33B108.2C20—C19—C22108.95 (17)
C2—C3—C4108.56 (13)C18—C19—H19109.4
C2—C3—C11110.40 (14)C20—C19—H19109.4
C4—C3—C11110.30 (15)C22—C19—H19109.4
C2—C3—C10108.42 (14)S1—C37—H37A109.5
C4—C3—C10108.78 (15)S1—C37—H37B109.5
C11—C3—C10110.32 (14)H37A—C37—H37B109.5
C1—C9—C5109.68 (14)S1—C37—H37C109.5
C1—C9—H9A109.7H37A—C37—H37C109.5
C5—C9—H9A109.7H37B—C37—H37C109.5
C1—C9—H9B109.7C17—C24—H24A109.5
C5—C9—H9B109.7C17—C24—H24B109.5
H9A—C9—H9B108.2H24A—C24—H24B109.5
C36—C29—C30111.16 (18)C17—C24—H24C109.5
C36—C29—C28110.63 (17)H24A—C24—H24C109.5
C30—C29—C28108.68 (16)H24B—C24—H24C109.5
C36—C29—C33109.98 (16)S3—C39—H39A109.5
C30—C29—C33107.91 (15)S3—C39—H39B109.5
C28—C29—C33108.40 (14)H39A—C39—H39B109.5
C24—C17—C16110.87 (17)S3—C39—H39C109.5
C24—C17—C18110.44 (17)H39A—C39—H39C109.5
C16—C17—C18108.76 (15)H39B—C39—H39C109.5
C24—C17—C21110.12 (15)C15—C23—H23A109.5
C16—C17—C21108.09 (14)C15—C23—H23B109.5
C18—C17—C21108.49 (15)H23A—C23—H23B109.5
C13—C20—C19108.48 (14)C15—C23—H23C109.5
C13—C20—H20A110.0H23A—C23—H23C109.5
C19—C20—H20A110.0H23B—C23—H23C109.5
C13—C20—H20B110.0C29—C36—H36A109.5
C19—C20—H20B110.0C29—C36—H36B109.5
H20A—C20—H20B108.4H36A—C36—H36B109.5
C6—C7—C8109.66 (16)C29—C36—H36C109.5
C6—C7—C10109.48 (17)H36A—C36—H36C109.5
C8—C7—C10109.83 (15)H36B—C36—H36C109.5
C6—C7—H7109.3S2—C38—H38A109.5
C8—C7—H7109.3S2—C38—H38B109.5
C10—C7—H7109.3H38A—C38—H38B109.5
C7—C10—C3110.09 (14)S2—C38—H38C109.5
C7—C10—H10A109.6H38A—C38—H38C109.5
C3—C10—H10A109.6H38B—C38—H38C109.5
C7—C10—H10B109.6C27—C35—H35A109.5
C3—C10—H10B109.6C27—C35—H35B109.5
H10A—C10—H10B108.2H35A—C35—H35B109.5
C34—C27—C35111.57 (19)C27—C35—H35C109.5
C34—C27—C28108.39 (16)H35A—C35—H35C109.5
C35—C27—C28110.15 (18)H35B—C35—H35C109.5
C34—C27—C26109.22 (16)C5—C12—H12A109.5
C35—C27—C26109.83 (16)C5—C12—H12B109.5
C28—C27—C26107.59 (15)H12A—C12—H12B109.5
C27—C28—C29111.83 (14)C5—C12—H12C109.5
C27—C28—H28A109.3H12A—C12—H12C109.5
C29—C28—H28A109.3H12B—C12—H12C109.5
N2—C13—C21—C17−179.89 (13)C35—C27—C26—C25−179.97 (18)
C20—C13—C21—C1760.96 (17)C28—C27—C26—C25−60.08 (19)
C14—C13—C21—C17−60.81 (17)C13—C14—C15—C16−58.79 (19)
N1—C1—C2—C3179.87 (13)C13—C14—C15—C2259.17 (19)
C9—C1—C2—C360.33 (17)C13—C14—C15—C23−179.39 (18)
C8—C1—C2—C3−61.22 (17)C2—C3—C4—C559.02 (19)
N1—C1—C8—C7−179.81 (14)C11—C3—C4—C5−179.90 (16)
C9—C1—C8—C7−60.78 (18)C10—C3—C4—C5−58.78 (19)
C2—C1—C8—C760.66 (18)C24—C17—C16—C15180.00 (16)
N2—C13—C14—C15−179.95 (14)C18—C17—C16—C1558.4 (2)
C21—C13—C14—C1560.69 (18)C21—C17—C16—C15−59.2 (2)
C20—C13—C14—C15−60.94 (18)C22—C15—C16—C17−58.15 (19)
N3—C25—C33—C29179.97 (13)C23—C15—C16—C17179.57 (17)
C26—C25—C33—C29−60.58 (17)C14—C15—C16—C1759.6 (2)
C32—C25—C33—C2961.26 (17)C1—C9—C5—C12−179.83 (19)
C1—C2—C3—C4−58.56 (18)C1—C9—C5—C6−58.40 (19)
C1—C2—C3—C11−179.59 (14)C1—C9—C5—C459.2 (2)
C1—C2—C3—C1059.46 (17)C3—C4—C5—C12−179.67 (19)
N1—C1—C9—C5179.41 (14)C3—C4—C5—C9−59.4 (2)
C2—C1—C9—C5−60.65 (18)C3—C4—C5—C658.44 (19)
C8—C1—C9—C560.60 (18)C25—C32—C31—C3059.1 (2)
C25—C33—C29—C36178.98 (17)C25—C32—C31—C34−60.8 (2)
C25—C33—C29—C30−59.61 (18)C30—C31—C34—C27−60.0 (2)
C25—C33—C29—C2857.92 (18)C32—C31—C34—C2760.4 (2)
C13—C21—C17—C24−179.97 (16)C35—C27—C34—C31179.94 (18)
C13—C21—C17—C1658.77 (18)C28—C27—C34—C3158.5 (2)
C13—C21—C17—C18−59.00 (18)C26—C27—C34—C31−58.5 (2)
N2—C13—C20—C19−179.97 (15)C24—C17—C18—C19179.54 (17)
C21—C13—C20—C19−60.65 (19)C16—C17—C18—C19−58.6 (2)
C14—C13—C20—C1961.13 (19)C21—C17—C18—C1958.8 (2)
C1—C8—C7—C660.18 (19)C34—C31—C30—C2959.6 (2)
C1—C8—C7—C10−60.2 (2)C32—C31—C30—C29−59.9 (2)
C6—C7—C10—C3−60.18 (19)C36—C29—C30—C31179.75 (18)
C8—C7—C10—C360.3 (2)C28—C29—C30—C31−58.3 (2)
C2—C3—C10—C7−59.00 (19)C33—C29—C30—C3159.08 (19)
C4—C3—C10—C758.89 (19)C16—C15—C22—C1957.9 (2)
C11—C3—C10—C7180.00 (16)C23—C15—C22—C19179.75 (18)
C34—C27—C28—C29−58.18 (19)C14—C15—C22—C19−59.8 (2)
C35—C27—C28—C29179.51 (18)C8—C7—C6—C5−60.2 (2)
C26—C27—C28—C2959.8 (2)C10—C7—C6—C560.35 (19)
C36—C29—C28—C27−179.52 (17)C12—C5—C6—C7179.38 (17)
C30—C29—C28—C2758.2 (2)C9—C5—C6—C758.7 (2)
C33—C29—C28—C27−58.9 (2)C4—C5—C6—C7−58.82 (19)
N3—C25—C32—C31−179.24 (15)C17—C18—C19—C20−60.1 (2)
C33—C25—C32—C31−59.88 (19)C17—C18—C19—C2259.7 (2)
C26—C25—C32—C3161.68 (19)C13—C20—C19—C1860.0 (2)
N3—C25—C26—C27−178.60 (14)C13—C20—C19—C22−60.3 (2)
C33—C25—C26—C2761.69 (18)C15—C22—C19—C18−59.5 (2)
C32—C25—C26—C27−59.91 (18)C15—C22—C19—C2060.8 (2)
C34—C27—C26—C2557.37 (19)
D—H···AD—HH···AD···AD—H···A
N1—H1A···O7i0.90 (2)1.92 (2)2.819 (2)177 (2)
N1—H1B···O10.90 (2)1.94 (2)2.833 (2)179 (2)
N1—H1C···O40.89 (2)1.96 (2)2.844 (2)170 (2)
N2—H2A···O2ii0.88 (2)1.92 (2)2.7991 (18)179 (2)
N2—H2B···O9ii0.87 (2)1.94 (2)2.8090 (19)175 (2)
N2—H2C···O60.90 (2)1.90 (2)2.7923 (19)177 (2)
N3—H3A···O30.90 (2)1.91 (2)2.7717 (19)159 (2)
N3—H3B···O50.90 (2)1.89 (2)2.7752 (19)172 (2)
N3—H3C···O8i0.89 (2)1.90 (2)2.785 (2)172 (2)
C39—H39B···O6iii0.962.593.423 (3)145
  9 in total

1.  Memantine in moderate-to-severe Alzheimer's disease.

Authors:  Barry Reisberg; Rachelle Doody; Albrecht Stöffler; Frederick Schmitt; Steven Ferris; Hans Jörg Möbius
Journal:  N Engl J Med       Date:  2003-04-03       Impact factor: 91.245

2.  A Nexus between Theory and Experiment: Non-Empirical Quantum Mechanical Computational Methodology Applied to Cucurbit[n]uril⋅Guest Binding Interactions.

Authors:  Jiří Hostaš; David Sigwalt; Marina Šekutor; Haresh Ajani; Matúš Dubecký; Jan Řezáč; Peter Y Zavalij; Liping Cao; Christian Wohlschlager; Kata Mlinarić-Majerski; Lyle Isaacs; Robert Glaser; Pavel Hobza
Journal:  Chemistry       Date:  2016-10-10       Impact factor: 5.236

3.  Memanti-nium chloride 0.1-hydrate.

Authors:  Wei-Jian Lou; Xiu-Rong Hu; Jian-Ming Gu
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2009-08-19

4.  Solid state stabilisation of the orally delivered drugs atenolol, glibenclamide, memantine and paracetamol through their complexation with cucurbit[7]uril.

Authors:  Fiona J McInnes; Nahoum G Anthony; Alan R Kennedy; Nial J Wheate
Journal:  Org Biomol Chem       Date:  2010-01-04       Impact factor: 3.876

Review 5.  Memantine and cholinesterase inhibitors: complementary mechanisms in the treatment of Alzheimer's disease.

Authors:  Chris G Parsons; Wojciech Danysz; Andrzej Dekundy; Irena Pulte
Journal:  Neurotox Res       Date:  2013-05-09       Impact factor: 3.911

6.  SHELXT - integrated space-group and crystal-structure determination.

Authors:  George M Sheldrick
Journal:  Acta Crystallogr A Found Adv       Date:  2015-01-01       Impact factor: 2.290

7.  Crystal structure refinement with SHELXL.

Authors:  George M Sheldrick
Journal:  Acta Crystallogr C Struct Chem       Date:  2015-01-01       Impact factor: 1.172

8.  Pharmacodynamics of memantine: an update.

Authors:  G Rammes; W Danysz; C G Parsons
Journal:  Curr Neuropharmacol       Date:  2008-03       Impact factor: 7.363

9.  The Cambridge Structural Database.

Authors:  Colin R Groom; Ian J Bruno; Matthew P Lightfoot; Suzanna C Ward
Journal:  Acta Crystallogr B Struct Sci Cryst Eng Mater       Date:  2016-04-01
  9 in total

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