Literature DB >> 25705463

Crystal structure of bis-[trans-(ethane-1,2-di-amine-κ(2) N,N')bis-(thio-cyanato-κN)chromium(III)] tetra-chlorido-zincate from synchrotron data.

Dohyun Moon1, Jong-Ha Choi2.   

Abstract

The structure of the title compound, [Cr(NCS)2(C2H8N2)2]2[ZnCl4], has been determined from synchrotron data. In the asymmetric unit, there are four independent halves of the Cr(III) complex cations, each of which lies on an inversion centre, and one tetra-chlorido-zincate anion in a general position. The Cr(III) atoms are coordinated by the four N atoms of two ethane-1,2-di-amine (en) ligands in the equatorial plane and two N-bound NCS(-) anions in a trans arrangement, displaying a slightly distorted octa-hedral geometry with crystallographic inversion symmetry. The Cr-N(en) and Cr-N(NCS) bond lengths range from 2.0653 (10) to 2.0837 (10) Å and from 1.9811 (10) to 1.9890 (10) Å, respectively. The five-membered metalla-rings are in stable gauche conformations. The [ZnCl4](2-) anion has a distorted tetra-hedral geometry. The crystal structure is stabilized by inter-molecular hydrogen bonds involving the en NH2 or CH2 groups as donors and chloride ligands of the anion and S atoms of NCS(-) ligands as acceptors.

Entities:  

Keywords:  Crystal structure; chromium(III) complex; ethane-1,2-di­amine; hydrogen bonds; synchrotron data; thio­cyanate; trans isomer

Year:  2015        PMID： 25705463      PMCID： PMC4331884          DOI： 10.1107/S2056989014027479

Source DB:  PubMed          Journal:  Acta Crystallogr E Crystallogr Commun


Chemical context

The study of geometrical isomers in octa­hedral transition metal complexes with bidentate amines has been an area of intense activity and has provided much basic structural information and insights into their spectroscopic properties. Ethane-1,2-di­amine (en) can act as a bidentate ligand to a central metal ion through its two nitro­gen atoms, forming a five-membered ring. The [Cr(en)2 L 2]+ (where L is a monodentate ligand) cation can form either trans or cis geometric isomers. Infrared, electronic absorption and emission spectral properties are useful in determining the geometric isomers of chromium(III) complexes with mixed ligands (Choi, 2000a ▸,b ▸; Choi et al., 2002 ▸, 2004a ▸,b ▸; Choi & Moon, 2014 ▸). However, it should be noted that the geometric assignments based on spectroscopic studies are much less conclusive. In addition, NCS− is an ambidentate ligand because it can coordinate to a transition metal through the nitro­gen (M—NCS), or the sulfur (M—SCN), or both (M–-NCS—M). In general, hard metals such as chromium, nickel and cobalt tend to form metal–NCS bonds, whereas the soft metals such as mercury, rhodium, iridium, palladium and platinum tend to bind through the S atom. The oxidation state of the metal, the nature of other ligands and steric factors also influence the mode of coordin­ation. Here, we report on the synthesis and structure of [Cr(en)2(NCS)2]2[ZnCl4] in order to determine the bonding mode of the thio­cyanate group and the geometric features of the two en ligands, the two NCS groups and the [ZnCl4]2− anion.

Structural commentary

Structural analysis shows that there are four crystallographically independent CrIII complex cations in which the four nitro­gen atoms of the two en ligands occupy the equatorial sites and the two thio­cyanate anions coordinate to the CrIII atom through their N atoms in a trans configuration. Fig. 1 ▸ shows an ellipsoid plot of two independent complex cations and one anion in trans-[Cr(en)2(NCS)2]2[ZnCl4], with the atom-numbering scheme.
Figure 1

A perspective view (60% probability ellipsoids) of two independent chromium(III) complex cations and the unique tetra­chlorido­zincate anion in trans-[Cr(en)2(NCS)2]2[ZnCl4]. The symmetry code for A′ atoms is −x + 2, −y, −z + 1 and for B′ atoms, the symmetry code is −x + 1, −y + 1, −z + 1.

The asymmetric unit contains four halves of the [Cr(en)2(NCS)2]+ complex cations and one [ZnCl4]2− anion. The four CrIII atoms are located on crystallographic centers of symmetry, so these complex cations have mol­ecular C symmetry. The spatial configuration of the bidentate en ring is a stable gauche form, which has been observed in other compounds (Brencic & Leban, 1981 ▸; Choi et al., 2010 ▸). The carbon atoms in the en ring are arranged symmetrically above and below the plane defined by the chromium and the en nitro­gen atoms. The two Cr–en rings are in δ and λ conformations as the CrIII atom occupies a special position with inversion symmetry. The Cr—N bond lengths for the en ligand range from 2.0653 (10) to 2.0837 (10) Å, in good agreement with those observed in trans-[Cr(en)2F2]ClO4 (Brencic & Leban, 1981 ▸), trans-[Cr(en)2Br2]ClO4 (Choi et al., 2010 ▸), trans-[Cr(Me2tn)2Cl2]2ZnCl4 (Me2tn = 2,2-di­methyl­propane-1,3-di­amine) (Choi et al., 2011 ▸) and trans-[Cr(2,2,3-tet)F2]ClO4 (2,2,3-tet = 1,4,7,11-tetra­aza­undeca­ne) (Choi & Moon, 2014 ▸). The Cr—N(CS) distances lie in the range 1.9811 (10) to 1.9890 (10) Å and are similar to the average values of 1.9826 (15) and 1.996 (15) Å found in trans-[Cr(Me2tn)2(NCS)2]NCS (Choi & Lee, 2009 ▸) and cis-[Cr(cyclam)(NCS)2]NCS (cyclam = 1,4,8,11-tetra­aza­cyclo­tetra­deca­ne) (Moon et al., 2013 ▸), respectively. The N-coord­in­ating ­thio­cyanato groups are almost linear with N—C—S angles ranging from 177.11 (8) to 179.15 (9)°. The [ZnCl4]2− counter-anion has a distorted tetra­hedral geometry due to the influence of hydrogen bonding on the Zn—Cl bond lengths and the Cl—Zn—Cl angles. Zn—Cl bond lengths range from 2.2518 (8) to 2.2923 (8) Å and the Cl—Zn—Cl angles are in the range 106.71 (2)–112.49 (2)°.

Supra­molecular features

In the asymmetric unit, a series of N—H⋯Cl and C—H⋯Cl hydrogen bonds link each anion to the four neighbouring cations, while N—H⋯S and C—H⋯S contacts inter­connect the complex cations (Fig. 2 ▸, Table 1 ▸). An extensive array of additional, similar contacts generate a three-dimensional network of mol­ecules stacked along the a-axis direction.
Figure 2

The mol­ecular packing for trans-[Cr(en)2(NCS)2]2[ZnCl4], viewed along the a axis. Hydrogen bonding is denoted by dashed liness, N—H⋯S (purple), C—H⋯S (grey), N—H⋯Cl (red), and C—H⋯Cl (blue).

Table 1

Hydrogen-bond geometry (, )

DHA DHHA D A DHA
N1AH1A1Cl3E i 0.912.483.3700(13)165
N2AH2A1Cl1E ii 0.912.503.3483(13)155
N2AH2A2Cl3E 0.912.903.5797(12)133
C1AH1A3S1A iii 0.992.913.5983(15)127
C2AH2A3Cl3E 0.992.913.5533(15)123
C2AH2A4S1B iv 0.992.943.6270(15)128
N1BH1B1Cl1E 0.912.453.2813(13)152
N1BH1B2S1A iii 0.912.813.5401(13)138
N2BH2B1Cl4E iv 0.912.493.3532(13)159
N2BH2B2Cl1E v 0.912.773.4934(12)138
C1BH1B3S1A iii 0.992.983.5910(14)121
C1BH1B3S1B v 0.992.873.6440(14)136
C2BH2B3Cl1E v 0.992.933.5309(14)120
N1CH1C1Cl4E 0.912.403.3058(12)171
N1CH1C2S1B 0.912.733.4473(14)137
N2CH2C1S1C iii 0.912.503.2836(12)144
N2CH2C2S1B vi 0.912.753.4063(11)130
N2CH2C2S1D iii 0.912.883.5893(13)135
C1CH1C4Cl1E 0.992.863.7421(13)149
N1DH1D1S1C 0.912.613.4937(13)164
N1DH1D2Cl2E 0.912.493.3919(12)172
N2DH2D1S1C vii 0.912.783.6225(12)155
N2DH2D2S1D viii 0.912.673.3564(12)133
C1DH1D3Cl3E 0.992.883.7357(14)145
C1DH1D4Cl2E ii 0.992.983.7397(12)135

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

Database survey

A search of the Cambridge Structural Database (Version 5.35, May 2014 with one update; Groom & Allen, 2014 ▸) indicates a total of 13 hits for CrIII complexes with a [Cr(en)2 L 2]+ unit. The crystal structures of trans-[Cr(en)2Cl2]Cl·HCl·2H2O (Ooi et al., 1960 ▸), trans-[Cr(en)2F2]X (X = ClO4, Cl, Br) (Brencic & Leban, 1981 ▸), cis-[Cr(en)2F2]ClO4 (Brencic et al., 1987 ▸), trans-[Cr(en)2Br2]ClO4 (Choi et al., 2010 ▸) have been reported previously. However, no structures of salts of [Cr(en)2(NCS)2]+ with any anions were found.

Synthesis and crystallization

All chemicals were reagent-grade materials and were used without further purification. The starting material, trans-[Cr(en)2(NCS)2]ClO4 was prepared according to the literature (Sandrini et al., 1978 ▸). The crude perchlorate salt (0.10 g) was dissolved in 5 mL of 0.1 M HCl at 333 K and added to 2 mL of 6 M HCl containing 0.3 g of solid ZnCl2. The resulting solution was filtered and allowed to stand at room temperature for two days to give red crystals of the tetra­chlorido­zincate salt suitable for X-ray structural analysis.

Refinement

Crystal data, data collection and structure refinement details are summarized in Table 2 ▸. Hydrogen atoms bound to carbon or nitro­gen were placed in calculated positions (C—H = 0.95, N—H = 0.91 Å), and were included in the refinement using the riding-model approximation with U iso(H) set to 1.2U eq(C, N).
Table 2

Experimental details

Crystal data
Chemical formula[Cr(NCS)2(C2H8N2)2]2[ZnCl4]
M r 783.90
Crystal system, space groupTriclinic, P
Temperature (K)100
a, b, c ()7.6870(15), 13.853(3), 14.560(3)
, , ()92.74(3), 92.76(3), 90.21(3)
V (3)1546.9(5)
Z 2
Radiation typeSynchrotron, = 0.62998
(mm1)1.50
Crystal size (mm)0.10 0.03 0.03
 
Data collection
DiffractometerADSC Q210 CCD area detector
Absorption correctionEmpirical (using intensity measurements) (HKL3000sm SCALEPACK; Otwinowski Minor, 1997 ▸)
T min, T max 0.865, 0.956
No. of measured, independent and observed [I > 2(I)] reflections17036, 8546, 8434
R int 0.014
(sin /)max (1)0.696
 
Refinement
R[F 2 > 2(F 2)], wR(F 2), S 0.018, 0.049, 1.03
No. of reflections8546
No. of parameters322
H-atom treatmentH-atom parameters constrained
max, min (e 3)0.48, 0.60

Computer programs: PAL ADSC Quantum-210 ADX (Arvai Nielsen, 1983 ▸), HKL3000sm (Otwinowski Minor, 1997 ▸), SHELXT2014 and SHELXL2014 (Sheldrick, 2008 ▸), DIAMOND (Brandenburg, 2007 ▸), WinGX (Farrugia, 2012 ▸) and publCIF (Westrip, 2010 ▸).

Crystal structure: contains datablock(s) I. DOI: 10.1107/S2056989014027479/sj5433sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S2056989014027479/sj5433Isup2.hkl CCDC reference: 1039747 Additional supporting information: crystallographic information; 3D view; checkCIF report
[Cr(NCS)2(C2H8N2)2]2[ZnCl4]Z = 2
Mr = 783.90F(000) = 796
Triclinic, P1Dx = 1.683 Mg m−3
a = 7.6870 (15) ÅSynchrotron radiation, λ = 0.62998 Å
b = 13.853 (3) ÅCell parameters from 94806 reflections
c = 14.560 (3) Åθ = 0.4–33.6°
α = 92.74 (3)°µ = 1.50 mm−1
β = 92.76 (3)°T = 100 K
γ = 90.21 (3)°Needle, red
V = 1546.9 (5) Å30.10 × 0.03 × 0.03 mm
ADSC Q210 CCD area-detector diffractometer8434 reflections with I > 2σ(I)
Radiation source: PLSII 2D bending magnetRint = 0.014
ω scansθmax = 26.0°, θmin = 2.4°
Absorption correction: empirical (using intensity measurements) (HKL3000sm SCALEPACK; Otwinowski & Minor, 1997)h = −10→10
Tmin = 0.865, Tmax = 0.956k = −19→19
17036 measured reflectionsl = −20→20
8546 independent reflections
Refinement on F20 restraints
Least-squares matrix: fullHydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.018H-atom parameters constrained
wR(F2) = 0.049w = 1/[σ2(Fo2) + (0.027P)2 + 0.6367P] where P = (Fo2 + 2Fc2)/3
S = 1.03(Δ/σ)max = 0.001
8546 reflectionsΔρmax = 0.48 e Å−3
322 parametersΔρmin = −0.60 e Å−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.
xyzUiso*/Ueq
Cr1A1.00000.00000.50000.00585 (4)
S1A1.34965 (3)0.21259 (2)0.69613 (2)0.01282 (5)
N1A0.83989 (11)0.00710 (6)0.61105 (6)0.01133 (14)
H1A10.7841−0.05050.61510.014*
H1A20.90520.01920.66420.014*
N2A0.86680 (11)0.12458 (6)0.46494 (6)0.01130 (14)
H2A10.94090.16760.44170.014*
H2A20.78030.10990.42160.014*
N3A1.17486 (11)0.08052 (6)0.57360 (6)0.01110 (14)
C1A0.70956 (13)0.08539 (8)0.59868 (7)0.01647 (18)
H1A30.67060.10940.65940.020*
H1A40.60660.06000.56160.020*
C2A0.79203 (13)0.16675 (7)0.55045 (7)0.01477 (18)
H2A30.70360.21590.53490.018*
H2A40.88490.19820.59090.018*
C3A1.24862 (12)0.13654 (6)0.62427 (6)0.00895 (15)
Cr2B0.50000.50000.50000.00494 (4)
S1B0.15226 (4)0.64435 (2)0.26918 (2)0.01492 (5)
N1B0.33365 (10)0.38801 (6)0.52696 (5)0.00894 (13)
H1B10.28190.36300.47350.011*
H1B20.39440.34020.55450.011*
N2B0.38490 (10)0.56908 (6)0.61174 (5)0.00906 (13)
H2B10.46790.59800.65050.011*
H2B20.31000.61520.59190.011*
N3B0.32168 (11)0.55205 (6)0.41316 (6)0.01046 (14)
C1B0.19944 (12)0.42703 (7)0.58878 (7)0.01159 (16)
H1B30.14210.37360.61880.014*
H1B40.10940.46220.55290.014*
C2B0.28916 (13)0.49470 (7)0.66051 (6)0.01178 (16)
H2B30.20220.52610.69990.014*
H2B40.37140.45840.70010.014*
C3B0.24999 (11)0.58858 (6)0.35161 (6)0.00807 (15)
Cr3C0.00000.50000.00000.00436 (4)
S1C0.47203 (3)0.29853 (2)−0.07639 (2)0.01296 (5)
N1C0.00397 (10)0.44890 (5)0.13158 (5)0.00792 (13)
H1C10.11180.42630.14740.010*
H1C2−0.02250.49730.17290.010*
N2C−0.12263 (11)0.36953 (6)−0.03474 (5)0.00961 (14)
H2C1−0.23720.3795−0.04990.012*
H2C2−0.07290.3404−0.08420.012*
N3C0.22291 (11)0.43406 (6)−0.02527 (6)0.01166 (14)
C1C−0.12726 (13)0.36960 (7)0.13185 (6)0.01083 (16)
H1C3−0.24640.39650.13220.013*
H1C4−0.10760.33140.18710.013*
C2C−0.10560 (14)0.30666 (7)0.04542 (6)0.01285 (17)
H2C30.01020.27560.04760.015*
H2C4−0.19610.25540.03990.015*
C3C0.32768 (12)0.37725 (7)−0.04576 (6)0.00935 (15)
Cr4D0.50000.00000.00000.00523 (4)
S1D0.95604 (3)0.14416 (2)−0.15730 (2)0.01195 (5)
N1D0.46882 (10)0.12154 (5)0.08662 (5)0.00860 (13)
H1D10.47610.17600.05450.010*
H1D20.36270.12000.11160.010*
N2D0.65239 (10)−0.04648 (6)0.11111 (6)0.01038 (14)
H2D10.6223−0.10800.12320.012*
H2D20.7668−0.04580.09760.012*
N3D0.70324 (10)0.06281 (6)−0.05272 (6)0.01025 (14)
C1D0.60962 (13)0.12127 (7)0.16052 (6)0.01106 (16)
H1D30.58100.16650.21230.013*
H1D40.72130.14200.13640.013*
C2D0.62447 (13)0.01935 (7)0.19298 (6)0.01289 (17)
H2D30.72350.01500.23860.015*
H2D40.51660.00090.22250.015*
C3D0.80965 (12)0.09622 (6)−0.09656 (6)0.00862 (15)
Zn1E0.22955 (2)0.24635 (2)0.28844 (2)0.00695 (3)
Cl1E0.02321 (3)0.32263 (2)0.37380 (2)0.01053 (4)
Cl2E0.09386 (3)0.12821 (2)0.20032 (2)0.01134 (4)
Cl3E0.43186 (3)0.18443 (2)0.38989 (2)0.01078 (4)
Cl4E0.37370 (3)0.34934 (2)0.20252 (2)0.01048 (4)
U11U22U33U12U13U23
Cr1A0.00661 (9)0.00475 (8)0.00601 (8)−0.00088 (6)−0.00137 (6)0.00022 (6)
S1A0.01664 (11)0.00822 (9)0.01275 (10)−0.00177 (8)−0.00551 (8)−0.00184 (7)
N1A0.0113 (3)0.0130 (4)0.0098 (3)−0.0010 (3)0.0011 (3)0.0008 (3)
N2A0.0132 (4)0.0082 (3)0.0123 (3)0.0008 (3)−0.0029 (3)0.0013 (3)
N3A0.0104 (3)0.0111 (3)0.0116 (3)−0.0023 (3)−0.0021 (3)0.0001 (3)
C1A0.0114 (4)0.0213 (5)0.0167 (4)0.0046 (4)0.0025 (3)−0.0014 (4)
C2A0.0159 (4)0.0108 (4)0.0168 (4)0.0051 (3)−0.0028 (3)−0.0038 (3)
C3A0.0089 (4)0.0083 (4)0.0098 (4)0.0012 (3)0.0002 (3)0.0031 (3)
Cr2B0.00588 (8)0.00513 (8)0.00366 (8)0.00158 (6)−0.00107 (6)−0.00018 (6)
S1B0.02450 (12)0.01331 (10)0.00660 (9)0.00362 (9)−0.00526 (8)0.00280 (8)
N1B0.0101 (3)0.0080 (3)0.0085 (3)0.0000 (3)0.0000 (3)−0.0010 (3)
N2B0.0108 (3)0.0089 (3)0.0073 (3)0.0019 (3)0.0004 (3)−0.0017 (2)
N3B0.0097 (3)0.0120 (3)0.0096 (3)0.0020 (3)−0.0020 (3)0.0010 (3)
C1B0.0096 (4)0.0123 (4)0.0131 (4)0.0000 (3)0.0029 (3)0.0006 (3)
C2B0.0149 (4)0.0130 (4)0.0078 (4)0.0015 (3)0.0036 (3)0.0005 (3)
C3B0.0088 (4)0.0081 (3)0.0072 (3)−0.0002 (3)0.0009 (3)−0.0011 (3)
Cr3C0.00541 (8)0.00389 (8)0.00375 (8)0.00058 (6)−0.00073 (6)0.00083 (6)
S1C0.01002 (10)0.01022 (10)0.01841 (11)0.00200 (7)0.00200 (8)−0.00320 (8)
N1C0.0104 (3)0.0082 (3)0.0051 (3)−0.0003 (3)−0.0013 (2)0.0009 (2)
N2C0.0148 (4)0.0081 (3)0.0059 (3)−0.0035 (3)−0.0017 (3)0.0012 (2)
N3C0.0102 (3)0.0136 (4)0.0116 (3)0.0033 (3)0.0015 (3)0.0032 (3)
C1C0.0145 (4)0.0110 (4)0.0071 (4)−0.0040 (3)0.0001 (3)0.0028 (3)
C2C0.0226 (5)0.0071 (4)0.0088 (4)−0.0038 (3)−0.0014 (3)0.0024 (3)
C3C0.0092 (4)0.0105 (4)0.0085 (4)−0.0013 (3)−0.0004 (3)0.0023 (3)
Cr4D0.00413 (8)0.00421 (8)0.00761 (8)0.00135 (6)0.00197 (6)0.00099 (6)
S1D0.01028 (10)0.00953 (10)0.01695 (11)0.00014 (7)0.00598 (8)0.00466 (8)
N1D0.0086 (3)0.0064 (3)0.0109 (3)0.0017 (2)0.0022 (3)0.0002 (3)
N2D0.0099 (3)0.0084 (3)0.0129 (3)0.0023 (3)−0.0004 (3)0.0025 (3)
N3D0.0084 (3)0.0091 (3)0.0134 (3)−0.0004 (3)0.0031 (3)−0.0002 (3)
C1D0.0138 (4)0.0092 (4)0.0101 (4)−0.0006 (3)−0.0003 (3)0.0002 (3)
C2D0.0175 (4)0.0120 (4)0.0094 (4)0.0001 (3)0.0001 (3)0.0029 (3)
C3D0.0081 (4)0.0063 (3)0.0114 (4)0.0018 (3)−0.0001 (3)−0.0002 (3)
Zn1E0.00724 (5)0.00672 (5)0.00674 (5)0.00094 (3)−0.00074 (3)−0.00012 (3)
Cl1E0.00871 (9)0.01205 (9)0.01064 (9)0.00290 (7)0.00053 (7)−0.00174 (7)
Cl2E0.01069 (9)0.00975 (9)0.01296 (9)−0.00072 (7)−0.00204 (7)−0.00320 (7)
Cl3E0.00939 (9)0.01256 (9)0.01027 (9)0.00166 (7)−0.00291 (7)0.00272 (7)
Cl4E0.01084 (9)0.01095 (9)0.00978 (9)−0.00068 (7)−0.00084 (7)0.00329 (7)
Cr1A—N3Ai1.9838 (11)Cr3C—N2C2.0653 (10)
Cr1A—N3A1.9838 (11)Cr3C—N2Ciii2.0653 (10)
Cr1A—N1Ai2.0775 (10)Cr3C—N1Ciii2.0727 (9)
Cr1A—N1A2.0776 (10)Cr3C—N1C2.0727 (9)
Cr1A—N2A2.0818 (10)S1C—C3C1.6215 (11)
Cr1A—N2Ai2.0818 (10)N1C—C1C1.4891 (12)
S1A—C3A1.6181 (11)N1C—H1C10.9100
N1A—C1A1.4905 (14)N1C—H1C20.9100
N1A—H1A10.9100N2C—C2C1.4903 (12)
N1A—H1A20.9100N2C—H2C10.9100
N2A—C2A1.4912 (13)N2C—H2C20.9100
N2A—H2A10.9100N3C—C3C1.1672 (13)
N2A—H2A20.9100C1C—C2C1.5125 (14)
N3A—C3A1.1704 (13)C1C—H1C30.9900
C1A—C2A1.5094 (16)C1C—H1C40.9900
C1A—H1A30.9900C2C—H2C30.9900
C1A—H1A40.9900C2C—H2C40.9900
C2A—H2A30.9900Cr4D—N3Div1.9890 (10)
C2A—H2A40.9900Cr4D—N3D1.9890 (10)
Cr2B—N3B1.9811 (10)Cr4D—N1Div2.0765 (10)
Cr2B—N3Bii1.9811 (10)Cr4D—N1D2.0766 (10)
Cr2B—N1Bii2.0707 (10)Cr4D—N2D2.0799 (10)
Cr2B—N1B2.0708 (10)Cr4D—N2Div2.0799 (10)
Cr2B—N2B2.0837 (10)S1D—C3D1.6237 (11)
Cr2B—N2Bii2.0837 (10)N1D—C1D1.4891 (13)
S1B—C3B1.6148 (10)N1D—H1D10.9100
N1B—C1B1.4879 (13)N1D—H1D20.9100
N1B—H1B10.9100N2D—C2D1.4903 (13)
N1B—H1B20.9100N2D—H2D10.9100
N2B—C2B1.4907 (13)N2D—H2D20.9100
N2B—H2B10.9100N3D—C3D1.1690 (13)
N2B—H2B20.9100C1D—C2D1.5131 (13)
N3B—C3B1.1665 (13)C1D—H1D30.9900
C1B—C2B1.5092 (14)C1D—H1D40.9900
C1B—H1B30.9900C2D—H2D30.9900
C1B—H1B40.9900C2D—H2D40.9900
C2B—H2B30.9900Zn1E—Cl2E2.2518 (8)
C2B—H2B40.9900Zn1E—Cl4E2.2630 (7)
Cr3C—N3C1.9864 (10)Zn1E—Cl3E2.2903 (8)
Cr3C—N3Ciii1.9864 (10)Zn1E—Cl1E2.2923 (8)
N3Ai—Cr1A—N3A180.0N3C—Cr3C—N2Ciii92.81 (4)
N3Ai—Cr1A—N1Ai89.16 (4)N3Ciii—Cr3C—N2Ciii87.19 (4)
N3A—Cr1A—N1Ai90.84 (4)N2C—Cr3C—N2Ciii180.0
N3Ai—Cr1A—N1A90.84 (4)N3C—Cr3C—N1Ciii88.78 (4)
N3A—Cr1A—N1A89.16 (4)N3Ciii—Cr3C—N1Ciii91.22 (4)
N1Ai—Cr1A—N1A180.0N2C—Cr3C—N1Ciii96.91 (4)
N3Ai—Cr1A—N2A90.31 (4)N2Ciii—Cr3C—N1Ciii83.09 (4)
N3A—Cr1A—N2A89.69 (4)N3C—Cr3C—N1C91.22 (4)
N1Ai—Cr1A—N2A97.06 (4)N3Ciii—Cr3C—N1C88.78 (4)
N1A—Cr1A—N2A82.94 (4)N2C—Cr3C—N1C83.09 (4)
N3Ai—Cr1A—N2Ai89.69 (4)N2Ciii—Cr3C—N1C96.91 (4)
N3A—Cr1A—N2Ai90.31 (4)N1Ciii—Cr3C—N1C180.0
N1Ai—Cr1A—N2Ai82.94 (4)C1C—N1C—Cr3C107.84 (6)
N1A—Cr1A—N2Ai97.06 (4)C1C—N1C—H1C1110.1
N2A—Cr1A—N2Ai180.0Cr3C—N1C—H1C1110.1
C1A—N1A—Cr1A109.59 (6)C1C—N1C—H1C2110.1
C1A—N1A—H1A1109.8Cr3C—N1C—H1C2110.1
Cr1A—N1A—H1A1109.8H1C1—N1C—H1C2108.5
C1A—N1A—H1A2109.8C2C—N2C—Cr3C108.84 (6)
Cr1A—N1A—H1A2109.8C2C—N2C—H2C1109.9
H1A1—N1A—H1A2108.2Cr3C—N2C—H2C1109.9
C2A—N2A—Cr1A107.35 (6)C2C—N2C—H2C2109.9
C2A—N2A—H2A1110.2Cr3C—N2C—H2C2109.9
Cr1A—N2A—H2A1110.2H2C1—N2C—H2C2108.3
C2A—N2A—H2A2110.2C3C—N3C—Cr3C163.96 (8)
Cr1A—N2A—H2A2110.2N1C—C1C—C2C106.92 (8)
H2A1—N2A—H2A2108.5N1C—C1C—H1C3110.3
C3A—N3A—Cr1A166.35 (8)C2C—C1C—H1C3110.3
N1A—C1A—C2A109.01 (8)N1C—C1C—H1C4110.3
N1A—C1A—H1A3109.9C2C—C1C—H1C4110.3
C2A—C1A—H1A3109.9H1C3—C1C—H1C4108.6
N1A—C1A—H1A4109.9N2C—C2C—C1C107.87 (7)
C2A—C1A—H1A4109.9N2C—C2C—H2C3110.1
H1A3—C1A—H1A4108.3C1C—C2C—H2C3110.1
N2A—C2A—C1A107.69 (8)N2C—C2C—H2C4110.1
N2A—C2A—H2A3110.2C1C—C2C—H2C4110.1
C1A—C2A—H2A3110.2H2C3—C2C—H2C4108.4
N2A—C2A—H2A4110.2N3C—C3C—S1C178.85 (9)
C1A—C2A—H2A4110.2N3Div—Cr4D—N3D180.0
H2A3—C2A—H2A4108.5N3Div—Cr4D—N1Div89.74 (4)
N3A—C3A—S1A178.78 (9)N3D—Cr4D—N1Div90.26 (4)
N3B—Cr2B—N3Bii180.0N3Div—Cr4D—N1D90.26 (4)
N3B—Cr2B—N1Bii89.64 (4)N3D—Cr4D—N1D89.74 (4)
N3Bii—Cr2B—N1Bii90.36 (4)N1Div—Cr4D—N1D180.00 (3)
N3B—Cr2B—N1B90.36 (4)N3Div—Cr4D—N2D88.05 (4)
N3Bii—Cr2B—N1B89.64 (4)N3D—Cr4D—N2D91.95 (4)
N1Bii—Cr2B—N1B180.0N1Div—Cr4D—N2D96.97 (4)
N3B—Cr2B—N2B91.27 (4)N1D—Cr4D—N2D83.03 (4)
N3Bii—Cr2B—N2B88.73 (4)N3Div—Cr4D—N2Div91.95 (4)
N1Bii—Cr2B—N2B96.72 (4)N3D—Cr4D—N2Div88.05 (4)
N1B—Cr2B—N2B83.28 (4)N1Div—Cr4D—N2Div83.03 (4)
N3B—Cr2B—N2Bii88.73 (4)N1D—Cr4D—N2Div96.97 (4)
N3Bii—Cr2B—N2Bii91.27 (4)N2D—Cr4D—N2Div180.0
N1Bii—Cr2B—N2Bii83.28 (4)C1D—N1D—Cr4D107.80 (6)
N1B—Cr2B—N2Bii96.72 (4)C1D—N1D—H1D1110.1
N2B—Cr2B—N2Bii180.0Cr4D—N1D—H1D1110.1
C1B—N1B—Cr2B108.20 (6)C1D—N1D—H1D2110.1
C1B—N1B—H1B1110.1Cr4D—N1D—H1D2110.1
Cr2B—N1B—H1B1110.1H1D1—N1D—H1D2108.5
C1B—N1B—H1B2110.1C2D—N2D—Cr4D108.84 (6)
Cr2B—N1B—H1B2110.1C2D—N2D—H2D1109.9
H1B1—N1B—H1B2108.4Cr4D—N2D—H2D1109.9
C2B—N2B—Cr2B107.91 (6)C2D—N2D—H2D2109.9
C2B—N2B—H2B1110.1Cr4D—N2D—H2D2109.9
Cr2B—N2B—H2B1110.1H2D1—N2D—H2D2108.3
C2B—N2B—H2B2110.1C3D—N3D—Cr4D169.62 (8)
Cr2B—N2B—H2B2110.1N1D—C1D—C2D107.70 (8)
H2B1—N2B—H2B2108.4N1D—C1D—H1D3110.2
C3B—N3B—Cr2B164.42 (8)C2D—C1D—H1D3110.2
N1B—C1B—C2B107.95 (8)N1D—C1D—H1D4110.2
N1B—C1B—H1B3110.1C2D—C1D—H1D4110.2
C2B—C1B—H1B3110.1H1D3—C1D—H1D4108.5
N1B—C1B—H1B4110.1N2D—C2D—C1D107.87 (8)
C2B—C1B—H1B4110.1N2D—C2D—H2D3110.1
H1B3—C1B—H1B4108.4C1D—C2D—H2D3110.1
N2B—C2B—C1B107.96 (7)N2D—C2D—H2D4110.1
N2B—C2B—H2B3110.1C1D—C2D—H2D4110.1
C1B—C2B—H2B3110.1H2D3—C2D—H2D4108.4
N2B—C2B—H2B4110.1N3D—C3D—S1D179.15 (9)
C1B—C2B—H2B4110.1Cl2E—Zn1E—Cl4E111.63 (2)
H2B3—C2B—H2B4108.4Cl2E—Zn1E—Cl3E111.31 (2)
N3B—C3B—S1B177.11 (8)Cl4E—Zn1E—Cl3E106.71 (2)
N3C—Cr3C—N3Ciii180.0Cl2E—Zn1E—Cl1E107.46 (2)
N3C—Cr3C—N2C87.19 (4)Cl4E—Zn1E—Cl1E112.49 (2)
N3Ciii—Cr3C—N2C92.81 (4)Cl3E—Zn1E—Cl1E107.20 (2)
Cr1A—N1A—C1A—C2A−33.94 (9)Cr3C—N1C—C1C—C2C44.29 (8)
Cr1A—N2A—C2A—C1A−45.42 (9)Cr3C—N2C—C2C—C1C39.21 (9)
N1A—C1A—C2A—N2A52.98 (10)N1C—C1C—C2C—N2C−55.56 (10)
Cr2B—N1B—C1B—C2B−41.73 (8)Cr4D—N1D—C1D—C2D−43.80 (8)
Cr2B—N2B—C2B—C1B−40.80 (8)Cr4D—N2D—C2D—C1D−38.66 (9)
N1B—C1B—C2B—N2B55.28 (10)N1D—C1D—C2D—N2D55.05 (10)
D—H···AD—HH···AD···AD—H···A
N1A—H1A1···Cl3Ev0.912.483.3700 (13)165
N2A—H2A1···Cl1Evi0.912.503.3483 (13)155
N2A—H2A2···Cl3E0.912.903.5797 (12)133
C1A—H1A3···S1Avii0.992.913.5983 (15)127
C2A—H2A3···Cl3E0.992.913.5533 (15)123
C2A—H2A4···S1Bii0.992.943.6270 (15)128
N1B—H1B1···Cl1E0.912.453.2813 (13)152
N1B—H1B2···S1Avii0.912.813.5401 (13)138
N2B—H2B1···Cl4Eii0.912.493.3532 (13)159
N2B—H2B2···Cl1Eviii0.912.773.4934 (12)138
C1B—H1B3···S1Avii0.992.983.5910 (14)121
C1B—H1B3···S1Bviii0.992.873.6440 (14)136
C2B—H2B3···Cl1Eviii0.992.933.5309 (14)120
N1C—H1C1···Cl4E0.912.403.3058 (12)171
N1C—H1C2···S1B0.912.733.4473 (14)137
N2C—H2C1···S1Cvii0.912.503.2836 (12)144
N2C—H2C2···S1Biii0.912.753.4063 (11)130
N2C—H2C2···S1Dvii0.912.883.5893 (13)135
C1C—H1C4···Cl1E0.992.863.7421 (13)149
N1D—H1D1···S1C0.912.613.4937 (13)164
N1D—H1D2···Cl2E0.912.493.3919 (12)172
N2D—H2D1···S1Civ0.912.783.6225 (12)155
N2D—H2D2···S1Dix0.912.673.3564 (12)133
C1D—H1D3···Cl3E0.992.883.7357 (14)145
C1D—H1D4···Cl2Evi0.992.983.7397 (12)135
  4 in total

1.  A short history of SHELX.

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

2.  The Cambridge Structural Database in retrospect and prospect.

Authors:  Colin R Groom; Frank H Allen
Journal:  Angew Chem Int Ed Engl       Date:  2014-01-02       Impact factor: 15.336

3.  Spectroscopic and ligand-field properties of [L-prolylglycinato][di(3-aminopropyl)amine]chromium(III) perchlorate.

Authors:  Jong-Ha Choi; Yong Pyo Hong; Yu Chul Park
Journal:  Spectrochim Acta A Mol Biomol Spectrosc       Date:  2002-06       Impact factor: 4.098

4.  cis-(1,4,8,11-Tetra-aza-cyclo-tetra-decane-κN (4))bis(-thio-cyanato-κN)chromium(III) thio-cyanate.

Authors:  Dohyun Moon; Jong-Ha Choi; Keon Sang Ryoo; Yong Pyo Hong
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2013-06-12
  4 in total

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