Literature DB >> 22590299

Redetermination of 1,3-diammonio-1,2,3-tride-oxy-cis-inositol dichloride.

Christian Neis1, Günter J Merten, Philipp Altenhofer, Kaspar Hegetschweiler.   

Abstract

The crystal structure of the title compound, C(6)H(16)N(2)O(3) (2+)·2Cl(-), has been reported previously by Palm [Acta Cryst. (1967 ▶), 22, 209-216] from Weisenberg camera data, with R1 = 10.5%, isotropic refinement of non-H atoms and H atoms not located. We remeasured a data set of the title compound and present a more precise structure determination. The asymmetric unit contains two unique 1,3-diammonio-1,2,3-tride-oxy-cis-inositol cations and four Cl(-) counter-ions. The cyclo-hexane rings of both inositol cations adopt chair conformations with two axial hy-droxy groups. An extended network of hydrogen bonds is formed. The four chloride counter ions are hydrogen bonded to the hydroxy and ammonium groups of the cations by N-H⋯Cl and O-H⋯Cl interactions. The cations are aligned into wavy layers by cation⋯cation interactions of the form N-H⋯O(ax), N-H⋯O(eq) and O(ax)-H⋯O(eq). Intramolecular hydrogen bonding between the axial hydroxy groups is, however, not observed.

Entities:  

Year:  2012        PMID: 22590299      PMCID: PMC3344537          DOI: 10.1107/S1600536812012366

Source DB:  PubMed          Journal:  Acta Crystallogr Sect E Struct Rep Online        ISSN: 1600-5368


Related literature

An earlier, less accurate structure determination of the title compound was performed by Palm (1967 ▶). The crystal structure of 1,3-diammonio-1,2,3-tride­oxy-cis-inositol sulfate has been reported by Neis et al. (2012 ▶). The importance of intra­molecular hydrogen bonding in 1,3,5-tris­ubstituted cyclo­hexane derivatives has been described by Gencheva et al. (2000 ▶), Saaidi et al. (2008 ▶) and Neis et al. (2010 ▶), and the implication of increased 1,3-diaxial repulsion on the conformation of a cyclo­hexane ring has been discussed by Fritsche-Lang et al. (1985 ▶), Kramer et al. (1998 ▶) and Kuppert et al. (2006 ▶). For the synthesis, see: Merten et al. (2012 ▶). For the treatment of hydrogen atoms in SHELXL, see: Müller et al. (2006 ▶).

Experimental

Crystal data

C6H16N2O3 2+·2Cl− M = 235.11 Monoclinic, a = 7.7899 (4) Å b = 10.1254 (5) Å c = 13.0136 (7) Å β = 91.156 (2)° V = 1026.25 (9) Å3 Z = 4 Mo Kα radiation μ = 0.61 mm−1 T = 130 K 0.30 × 0.22 × 0.15 mm

Data collection

Bruker–Nonius X8 APEX KappaCCD diffractometer Absorption correction: multi-scan (SADABS; Bruker, 2010 ▶) T min = 0.838, T max = 0.914 16242 measured reflections 4459 independent reflections 4429 reflections with I > 2σ(I) R int = 0.017

Refinement

R[F 2 > 2σ(F 2)] = 0.017 wR(F 2) = 0.047 S = 1.06 4459 reflections 289 parameters 19 restraints H atoms treated by a mixture of independent and constrained refinement Δρmax = 0.27 e Å−3 Δρmin = −0.15 e Å−3 Absolute structure: Flack (1983 ▶), 2093 Friedel pairs Flack parameter: 0.01 (3) Data collection: APEX2 (Bruker, 2010 ▶); cell refinement: SAINT (Bruker, 2010 ▶); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: DIAMOND (Brandenburg, 2011 ▶); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009 ▶). Crystal structure: contains datablock(s) global, I. DOI: 10.1107/S1600536812012366/sj5213sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536812012366/sj5213Isup2.hkl Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C6H16N2O32+·2ClF(000) = 496
Mr = 235.11Dx = 1.522 Mg m3
Monoclinic, P21Mo Kα radiation, λ = 0.71073 Å
Hall symbol: P 2ybCell parameters from 9336 reflections
a = 7.7899 (4) Åθ = 2.6–40.5°
b = 10.1254 (5) ŵ = 0.61 mm1
c = 13.0136 (7) ÅT = 130 K
β = 91.156 (2)°Prism, colorless
V = 1026.25 (9) Å30.30 × 0.22 × 0.15 mm
Z = 4
Bruker–Nonius X8 APEX KappaCCD diffractometer4459 independent reflections
Radiation source: fine-focus sealed tube4429 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.017
φ and ω scansθmax = 27.0°, θmin = 1.6°
Absorption correction: multi-scan (SADABS; Bruker, 2010)h = −9→9
Tmin = 0.838, Tmax = 0.914k = −12→12
16242 measured reflectionsl = −16→16
Refinement on F2Secondary atom site location: difference Fourier map
Least-squares matrix: fullHydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.017H atoms treated by a mixture of independent and constrained refinement
wR(F2) = 0.047w = 1/[σ2(Fo2) + (0.0292P)2 + 0.1788P] where P = (Fo2 + 2Fc2)/3
S = 1.06(Δ/σ)max = 0.001
4459 reflectionsΔρmax = 0.27 e Å3
289 parametersΔρmin = −0.15 e Å3
19 restraintsAbsolute structure: Flack (1983), 2093 Friedel pairs
Primary atom site location: structure-invariant direct methodsFlack parameter: 0.01 (3)
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes.
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.
xyzUiso*/Ueq
C10.65695 (15)0.78053 (13)0.49259 (9)0.0116 (2)
H1A0.74400.82970.45350.014*
H1B0.67420.68500.48050.014*
C20.47789 (15)0.82069 (11)0.45618 (9)0.0109 (2)
H20.46290.91770.46720.013*
C30.33980 (16)0.74645 (11)0.51435 (9)0.0117 (2)
H30.22450.78220.49360.014*
C40.36884 (16)0.76840 (13)0.63009 (9)0.0135 (2)
H40.34780.86380.64530.016*
C50.54882 (17)0.73308 (12)0.66995 (9)0.0141 (2)
H50.56050.75970.74380.017*
C60.67808 (15)0.81082 (12)0.60699 (9)0.0129 (2)
H60.66050.90750.61850.015*
N180.72743 (14)1.01783 (11)0.05624 (8)0.0149 (2)
H18A0.6277 (19)1.0191 (18)0.0889 (12)0.022*
H18B0.789 (2)1.0895 (16)0.0746 (14)0.022*
H18C0.706 (2)1.0188 (19)−0.0129 (10)0.022*
N220.73895 (14)0.53468 (11)0.10007 (8)0.0154 (2)
H22C0.706 (2)0.5268 (19)0.0357 (11)0.023*
H22A0.801 (2)0.4651 (17)0.1183 (13)0.023*
H22B0.646 (2)0.5385 (19)0.1356 (13)0.023*
O190.75839 (12)0.93190 (9)0.26803 (7)0.01429 (18)
H190.751 (2)1.0080 (15)0.2863 (13)0.021*
O201.09187 (12)0.81557 (10)0.32436 (7)0.0206 (2)
H201.028 (2)0.8689 (19)0.3606 (14)0.031*
O210.78841 (12)0.64823 (10)0.28780 (7)0.01674 (19)
H210.837 (2)0.6185 (18)0.3397 (12)0.025*
N70.45629 (14)0.79085 (11)0.34387 (8)0.0132 (2)
H7C0.3542 (19)0.8197 (17)0.3215 (13)0.020*
H7B0.537 (2)0.8271 (17)0.3103 (13)0.020*
H7A0.462 (2)0.7050 (14)0.3315 (13)0.020*
C130.83453 (16)0.90192 (12)0.08871 (9)0.0140 (2)
H130.93610.89700.04310.017*
O80.34834 (12)0.61091 (9)0.48626 (7)0.01400 (17)
H80.2471 (19)0.5838 (18)0.4902 (14)0.021*
C140.89926 (16)0.92022 (12)0.19938 (9)0.0131 (2)
H140.97041.00230.20370.016*
O90.24058 (12)0.69200 (10)0.68068 (7)0.01881 (19)
H90.213 (2)0.7301 (18)0.7312 (13)0.028*
C151.01194 (16)0.80171 (13)0.22624 (9)0.0152 (2)
H151.10640.80110.17540.018*
O100.58596 (14)0.59647 (10)0.66089 (7)0.0204 (2)
H100.601 (2)0.5671 (19)0.7219 (12)0.031*
C160.92115 (16)0.66793 (12)0.21605 (9)0.0134 (2)
H161.00840.59630.22550.016*
N110.85723 (14)0.77409 (13)0.63986 (8)0.0182 (2)
H11C0.931 (2)0.8269 (18)0.6089 (14)0.027*
H11B0.872 (2)0.780 (2)0.7055 (11)0.027*
H11A0.883 (2)0.6931 (16)0.6164 (14)0.027*
C170.84314 (16)0.65722 (12)0.10753 (9)0.0132 (2)
H170.93920.65000.05800.016*
C120.73148 (16)0.77507 (13)0.07590 (9)0.0137 (2)
H12A0.69290.76520.00330.016*
H12B0.62850.77860.11920.016*
Cl10.95255 (4)0.27346 (3)0.13119 (2)0.01574 (7)
Cl20.96850 (3)0.51134 (3)0.48456 (2)0.01623 (6)
Cl30.36075 (4)0.53635 (3)0.18167 (2)0.02006 (7)
Cl40.34728 (4)0.98731 (3)0.12868 (2)0.02147 (7)
U11U22U33U12U13U23
C10.0106 (5)0.0148 (6)0.0092 (5)−0.0009 (4)−0.0005 (4)0.0008 (4)
C20.0121 (5)0.0109 (5)0.0096 (5)−0.0002 (4)−0.0004 (4)−0.0002 (4)
C30.0111 (5)0.0103 (5)0.0138 (5)0.0004 (4)0.0021 (4)−0.0004 (4)
C40.0166 (6)0.0108 (5)0.0134 (5)−0.0016 (4)0.0059 (4)−0.0001 (4)
C50.0203 (6)0.0122 (5)0.0097 (5)−0.0014 (5)0.0021 (4)0.0003 (4)
C60.0138 (6)0.0140 (6)0.0107 (5)−0.0020 (4)−0.0015 (4)0.0004 (4)
N180.0175 (5)0.0141 (5)0.0131 (4)−0.0007 (4)−0.0003 (4)0.0020 (4)
N220.0177 (5)0.0142 (5)0.0140 (5)0.0010 (4)−0.0013 (4)−0.0019 (4)
O190.0168 (4)0.0137 (4)0.0125 (4)0.0013 (3)0.0033 (3)−0.0020 (3)
O200.0189 (5)0.0250 (5)0.0176 (4)0.0031 (4)−0.0048 (4)−0.0033 (4)
O210.0170 (5)0.0219 (5)0.0114 (4)0.0020 (4)0.0003 (3)0.0017 (3)
N70.0133 (5)0.0159 (5)0.0104 (5)−0.0016 (4)−0.0012 (4)0.0010 (4)
C130.0158 (6)0.0136 (6)0.0125 (5)0.0003 (4)0.0017 (4)0.0005 (4)
O80.0129 (4)0.0115 (4)0.0177 (4)−0.0025 (3)0.0029 (3)−0.0030 (3)
C140.0113 (5)0.0139 (6)0.0140 (6)−0.0012 (4)0.0011 (4)−0.0014 (4)
O90.0214 (5)0.0175 (5)0.0180 (4)−0.0036 (4)0.0115 (4)−0.0020 (4)
C150.0115 (5)0.0173 (6)0.0167 (6)0.0015 (4)−0.0028 (4)−0.0033 (5)
O100.0302 (5)0.0148 (4)0.0162 (4)0.0005 (4)−0.0002 (4)0.0018 (4)
C160.0128 (6)0.0142 (6)0.0133 (5)0.0022 (4)−0.0005 (4)−0.0003 (4)
N110.0171 (5)0.0222 (6)0.0151 (5)−0.0032 (5)−0.0055 (4)0.0027 (5)
C170.0135 (6)0.0133 (6)0.0127 (5)0.0000 (4)0.0021 (4)−0.0020 (4)
C120.0166 (5)0.0144 (6)0.0101 (5)0.0001 (5)−0.0015 (4)−0.0010 (4)
Cl10.01912 (14)0.01465 (13)0.01360 (12)−0.00009 (11)0.00369 (10)0.00124 (10)
Cl20.01362 (13)0.01454 (13)0.02052 (14)−0.00019 (10)0.00009 (10)0.00263 (11)
Cl30.01973 (14)0.02535 (17)0.01513 (13)−0.00115 (12)0.00145 (10)−0.00093 (12)
Cl40.01848 (14)0.03068 (18)0.01520 (13)−0.00287 (12)−0.00074 (10)0.00097 (12)
C1—C21.5195 (16)O19—H190.809 (15)
C1—C61.5257 (15)O20—C151.4163 (15)
C1—H1A0.9900O20—H200.878 (15)
C1—H1B0.9900O21—C161.4212 (15)
C2—N71.4987 (14)O21—H210.825 (14)
C2—C31.5258 (16)N7—H7C0.890 (14)
C2—H21.0000N7—H7B0.852 (14)
C3—O81.4222 (14)N7—H7A0.885 (14)
C3—C41.5347 (16)C13—C121.5221 (18)
C3—H31.0000C13—C141.5275 (16)
C4—O91.4341 (14)C13—H131.0000
C4—C51.5275 (18)O8—H80.838 (14)
C4—H41.0000C14—C151.5232 (17)
C5—O101.4186 (15)C14—H141.0000
C5—C61.5291 (16)O9—H90.796 (15)
C5—H51.0000C15—C161.5326 (17)
C6—N111.4983 (16)C15—H151.0000
C6—H61.0000O10—H100.854 (15)
N18—C131.4959 (16)C16—C171.5299 (16)
N18—H18A0.893 (14)C16—H161.0000
N18—H18B0.900 (14)N11—H11C0.885 (15)
N18—H18C0.911 (13)N11—H11B0.862 (14)
N22—C171.4848 (16)N11—H11A0.898 (15)
N22—H22C0.874 (14)C17—C121.5283 (17)
N22—H22A0.883 (15)C17—H171.0000
N22—H22B0.865 (14)C12—H12A0.9900
O19—C141.4339 (15)C12—H12B0.9900
C2—C1—C6109.31 (10)C2—N7—H7C109.6 (11)
C2—C1—H1A109.8C2—N7—H7B110.1 (12)
C6—C1—H1A109.8H7C—N7—H7B110.5 (16)
C2—C1—H1B109.8C2—N7—H7A111.7 (12)
C6—C1—H1B109.8H7C—N7—H7A107.9 (17)
H1A—C1—H1B108.3H7B—N7—H7A106.9 (17)
N7—C2—C1109.54 (9)N18—C13—C12109.95 (10)
N7—C2—C3108.55 (9)N18—C13—C14110.05 (10)
C1—C2—C3111.43 (9)C12—C13—C14111.65 (10)
N7—C2—H2109.1N18—C13—H13108.4
C1—C2—H2109.1C12—C13—H13108.4
C3—C2—H2109.1C14—C13—H13108.4
O8—C3—C2108.11 (9)C3—O8—H8104.6 (12)
O8—C3—C4112.66 (10)O19—C14—C15111.51 (10)
C2—C3—C4108.91 (10)O19—C14—C13110.81 (10)
O8—C3—H3109.0C15—C14—C13107.37 (10)
C2—C3—H3109.0O19—C14—H14109.0
C4—C3—H3109.0C15—C14—H14109.0
O9—C4—C5111.16 (10)C13—C14—H14109.0
O9—C4—C3106.39 (10)C4—O9—H9108.6 (14)
C5—C4—C3114.55 (10)O20—C15—C14111.69 (10)
O9—C4—H4108.2O20—C15—C16111.06 (10)
C5—C4—H4108.2C14—C15—C16114.43 (10)
C3—C4—H4108.2O20—C15—H15106.4
O10—C5—C4112.79 (10)C14—C15—H15106.4
O10—C5—C6108.65 (10)C16—C15—H15106.4
C4—C5—C6107.90 (10)C5—O10—H10106.7 (13)
O10—C5—H5109.1O21—C16—C17108.41 (10)
C4—C5—H5109.1O21—C16—C15114.07 (10)
C6—C5—H5109.1C17—C16—C15108.45 (10)
N11—C6—C1108.07 (10)O21—C16—H16108.6
N11—C6—C5109.81 (10)C17—C16—H16108.6
C1—C6—C5111.11 (10)C15—C16—H16108.6
N11—C6—H6109.3C6—N11—H11C109.0 (12)
C1—C6—H6109.3C6—N11—H11B111.6 (13)
C5—C6—H6109.3H11C—N11—H11B109.4 (18)
C13—N18—H18A111.2 (12)C6—N11—H11A109.9 (12)
C13—N18—H18B105.4 (12)H11C—N11—H11A104.3 (17)
H18A—N18—H18B109.1 (17)H11B—N11—H11A112.3 (18)
C13—N18—H18C112.1 (11)N22—C17—C12109.12 (10)
H18A—N18—H18C109.2 (15)N22—C17—C16109.03 (10)
H18B—N18—H18C109.8 (17)C12—C17—C16113.99 (10)
C17—N22—H22C106.7 (12)N22—C17—H17108.2
C17—N22—H22A110.8 (12)C12—C17—H17108.2
H22C—N22—H22A109.4 (17)C16—C17—H17108.2
C17—N22—H22B112.8 (13)C13—C12—C17109.47 (10)
H22C—N22—H22B106.6 (16)C13—C12—H12A109.8
H22A—N22—H22B110.3 (17)C17—C12—H12A109.8
C14—O19—H19108.9 (13)C13—C12—H12B109.8
C15—O20—H20107.5 (13)C17—C12—H12B109.8
C16—O21—H21105.0 (13)H12A—C12—H12B108.2
C6—C1—C2—N7−179.87 (10)N18—C13—C14—O1959.93 (13)
C6—C1—C2—C3−59.74 (13)C12—C13—C14—O19−62.45 (13)
N7—C2—C3—O853.24 (12)N18—C13—C14—C15−178.07 (10)
C1—C2—C3—O8−67.46 (12)C12—C13—C14—C1559.55 (13)
N7—C2—C3—C4175.96 (9)O19—C14—C15—O20−64.11 (13)
C1—C2—C3—C455.26 (12)C13—C14—C15—O20174.33 (10)
O8—C3—C4—O9−57.58 (13)O19—C14—C15—C1663.16 (13)
C2—C3—C4—O9−177.52 (9)C13—C14—C15—C16−58.41 (13)
O8—C3—C4—C565.65 (14)O20—C15—C16—O2161.04 (13)
C2—C3—C4—C5−54.29 (13)C14—C15—C16—O21−66.54 (13)
O9—C4—C5—O1055.85 (13)O20—C15—C16—C17−178.05 (10)
C3—C4—C5—O10−64.77 (13)C14—C15—C16—C1754.36 (13)
O9—C4—C5—C6175.88 (9)O21—C16—C17—N22−49.61 (13)
C3—C4—C5—C655.25 (13)C15—C16—C17—N22−173.95 (10)
C2—C1—C6—N11−178.30 (10)O21—C16—C17—C1272.58 (13)
C2—C1—C6—C561.17 (13)C15—C16—C17—C12−51.77 (13)
O10—C5—C6—N11−54.54 (13)N18—C13—C12—C17179.03 (10)
C4—C5—C6—N11−177.14 (10)C14—C13—C12—C17−58.53 (13)
O10—C5—C6—C164.96 (13)N22—C17—C12—C13177.03 (10)
C4—C5—C6—C1−57.64 (13)C16—C17—C12—C1354.90 (13)
D—H···AD—HH···AD···AD—H···A
N18—H18A···Cl40.89 (1)2.28 (1)3.1411 (11)163 (2)
N18—H18B···Cl1i0.90 (1)2.37 (2)3.2646 (12)177 (2)
N18—H18C···Cl3ii0.91 (1)2.26 (1)3.1634 (11)175 (2)
N22—H22C···Cl4iii0.87 (1)2.21 (1)3.0761 (11)172 (2)
N22—H22A···Cl10.88 (2)2.28 (2)3.1466 (12)168 (2)
N22—H22B···Cl30.87 (1)2.32 (2)3.1518 (12)162 (2)
O19—H19···O9iv0.81 (2)1.91 (2)2.7168 (13)172 (2)
O20—H20···Cl2v0.88 (2)2.48 (2)3.2220 (10)143 (2)
O21—H21···Cl20.83 (1)2.39 (2)3.2096 (10)174 (2)
N7—H7C···O20vi0.89 (1)2.05 (2)2.8560 (15)151 (2)
N7—H7B···O190.85 (1)2.11 (2)2.9404 (14)164 (2)
N7—H7A···Cl30.89 (1)2.70 (2)3.4038 (11)138 (1)
O8—H8···Cl2vi0.84 (1)2.29 (2)3.1256 (10)175 (2)
O9—H9···Cl1iv0.80 (2)2.27 (2)3.0144 (10)156 (2)
O10—H10···Cl4vii0.85 (2)2.14 (2)2.9889 (10)177 (2)
N11—H11C···Cl2v0.89 (2)2.37 (2)3.2132 (12)159 (2)
N11—H11B···Cl1v0.86 (1)2.51 (2)3.3007 (11)154 (2)
N11—H11A···Cl20.90 (2)2.61 (2)3.4618 (13)158 (2)
Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯AD—HH⋯ADAD—H⋯A
N18—H18A⋯Cl40.89 (1)2.28 (1)3.1411 (11)163 (2)
N18—H18B⋯Cl1i0.90 (1)2.37 (2)3.2646 (12)177 (2)
N18—H18C⋯Cl3ii0.91 (1)2.26 (1)3.1634 (11)175 (2)
N22—H22C⋯Cl4iii0.87 (1)2.21 (1)3.0761 (11)172 (2)
N22—H22A⋯Cl10.88 (2)2.28 (2)3.1466 (12)168 (2)
N22—H22B⋯Cl30.87 (1)2.32 (2)3.1518 (12)162 (2)
O19—H19⋯O9iv0.81 (2)1.91 (2)2.7168 (13)172 (2)
O20—H20⋯Cl2v0.88 (2)2.48 (2)3.2220 (10)143 (2)
O21—H21⋯Cl20.83 (1)2.39 (2)3.2096 (10)174 (2)
N7—H7C⋯O20vi0.89 (1)2.05 (2)2.8560 (15)151 (2)
N7—H7B⋯O190.85 (1)2.11 (2)2.9404 (14)164 (2)
N7—H7A⋯Cl30.89 (1)2.70 (2)3.4038 (11)138 (1)
O8—H8⋯Cl2vi0.84 (1)2.29 (2)3.1256 (10)175 (2)
O9—H9⋯Cl1iv0.80 (2)2.27 (2)3.0144 (10)156 (2)
O10—H10⋯Cl4vii0.85 (2)2.14 (2)2.9889 (10)177 (2)
N11—H11C⋯Cl2v0.89 (2)2.37 (2)3.2132 (12)159 (2)
N11—H11B⋯Cl1v0.86 (1)2.51 (2)3.3007 (11)154 (2)
N11—H11A⋯Cl20.90 (2)2.61 (2)3.4618 (13)158 (2)

Symmetry codes: (i) ; (ii) ; (iii) ; (iv) ; (v) ; (vi) ; (vii) .

  6 in total

1.  Facially coordinating triamine ligands with a cyclic backbone: some structure-stability correlations.

Authors:  Christian Neis; David Petry; Alexandre Demangeon; Bernd Morgenstern; Dirk Kuppert; Jochen Huppert; Stefan Stucky; Kaspar Hegetschweiler
Journal:  Inorg Chem       Date:  2010-11-01       Impact factor: 5.165

2.  A short history of SHELX.

Authors:  George M Sheldrick
Journal:  Acta Crystallogr A       Date:  2007-12-21       Impact factor: 2.290

3.  3,5,7-Tripropyl-1-aza-adamantane-4,6,10-triol.

Authors:  Pierre-Loïc Saaidi; Pierre-Etienne Chazal; Philippe Maurin; Erwann Jeanneau; Jens Hasserodt
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2008-04-04

4.  Derivatives of 1,3,5-triamino-1,3,5-trideoxy-cis-inositol as versatile pentadentate ligands for protein labeling with Re-186/188. prelabeling, biodistribution, and X-ray structural studies.

Authors:  A Kramer; R Alberto; A Egli; I Novak-Hofer; K Hegetschweiler; U Abram; P V Bernhardt; P A Schubiger
Journal:  Bioconjug Chem       Date:  1998 Nov-Dec       Impact factor: 4.774

5.  1,3-Diammonio-1,2,3-tride-oxy-cis-inositol sulfate.

Authors:  Christian Neis; Günter J Merten; Kaspar Hegetschweiler
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2012-04-18

6.  Structure validation in chemical crystallography.

Authors:  Anthony L Spek
Journal:  Acta Crystallogr D Biol Crystallogr       Date:  2009-01-20
  6 in total
  2 in total

1.  Tris(cis-2-hy-droxy-cyclo-hexane-1,3,5-tri-aminium) hydrogen sulfate octa-chloride dihydrate.

Authors:  Christian Neis; Günter J Merten; Kaspar Hegetschweiler
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2012-05-26

2.  1,3-Diammonio-1,2,3-tride-oxy-cis-inositol sulfate.

Authors:  Christian Neis; Günter J Merten; Kaspar Hegetschweiler
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2012-04-18
  2 in total

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