cis-Tetra­chloridobis(1H-imidazole-κN3)platinum(IV)

Bokach, N.A.; Kukushkin, V.Y.; Izotova, Y.A.; Usenko, N.I.; Haukka, M.

doi:10.1107/S1600536812013323

Volume 68
Part 5
Pages m547-m548
May 2012

Received 11 March 2012
Accepted 27 March 2012
Online 4 April 2012

Key indicators
Single-crystal X-ray study
T = 120 K
Mean (C-C) = 0.005 Å
R = 0.019
wR = 0.037
Data-to-parameter ratio = 19.5
Details

cis-Tetrachloridobis(1H-imidazole-N³)platinum(IV)

Nadezhda A. Bokach,^a Vadim Yu. Kukushkin,^a Yulia A. Izotova,^a Natalia I. Usenko ^b ^* and Matti Haukka ^c

^aDepartment of Chemistry, Saint-Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof, Russian Federation,^bDepartment of Chemistry, Taras Shevchenko National University, 01601 Kiev, Ukraine, and ^cDepartment of Chemistry, University of Eastern Finland, PO Box 111, FI-80101 Joensuu, Finland
Correspondence e-mail: nusenko@univ.kiev.ua

In the title complex, cis-[PtCl₄(C₃H₄N₂)₂], the Pt^IV ion lies on a twofold rotation axis and is coordinated in a slightly distorted octahedral geometry. The dihedral angle between the imidazole rings is 69.9 (2)°. In the crystal, molecules are linked by N-HCl hydrogen bonds, forming a three-dimensional network.

Related literature

For applications of platinum species bearing N-bonded heterocycles, see: Ravera et al. (2011); Esmaeilbeig et al. (2011); Al-Shuneigat et al. (2010); Wheate et al. (2007); van Zutphen et al. (2006); Fritsky et al. (2000); Krämer & Fritsky (2000). For the synthesis of platinum complexes with N-heterocyclic ligands, see: Bokach, Kuznetsov et al. (2011); Kritchenkov et al. (2011); Bokach, Balova et al. (2011); Tskhovrebov et al. (2009); Luzyanin et al. (2009); Bokach et al. (2009). For related structures, see: Khripun et al. (2006, 2007); Korte et al. (1981); Kuduk-Jaworska et al. (1988); Bayon et al. (1987); Yip et al. (1993); Chen et al. (2006); Gao et al. (2004); Garcia et al. (2000); Hao & Yu (2007); Huo et al. (2004). For bond-length data, see: Orpen et al. (1989).

Experimental

Crystal data

[PtCl₄(C₃H₄N₂)₂]
M_r = 473.05
Monoclinic, C 2/c
a = 7.7264 (4) Å
b = 11.8757 (6) Å
c = 12.9471 (5) Å
= 93.332 (3)°
V = 1185.97 (10) Å³
Z = 4
Mo K radiation
= 12.70 mm^-1
T = 120 K
0.15 × 0.13 × 0.07 mm

Data collection

Nonius KappaCCD diffractometer
Absorption correction: multi-scan (DENZO/SCALEPACK; Otwinowski & Minor, 1997) T_min = 0.193, T_max = 0.411
7759 measured reflections
1362 independent reflections
1275 reflections with I > 2(I)
R_int = 0.037

Refinement

R[F² > 2(F²)] = 0.019
wR(F²) = 0.037
S = 1.05
1362 reflections
70 parameters
H-atom parameters constrained
_max = 0.68 e Å^-3
_min = -0.73 e Å^-3

Table 1
Selected bond lengths (Å)

Pt1-N1	2.046 (3)
Pt1-Cl2	2.3141 (8)
Pt1-Cl1	2.3193 (8)

Table 2
Hydrogen-bond geometry (Å, °)

D-HA	D-H	HA	DA	D-HA
N2-H2NCl1ⁱⁱ	0.98	2.66	3.355 (3)	128
N2-H2NCl2ⁱⁱ	0.98	2.70	3.320 (3)	122
N2-H2NCl1ⁱⁱⁱ	0.98	2.82	3.368 (3)	116
Symmetry codes: (ii) $[x+{\script{1\over 2}}, y+{\script{1\over 2}}, z]$ ; (iii) $[-x+{\script{1\over 2}}, -y+{\script{1\over 2}}, -z+1]$ .

Data collection: COLLECT (Nonius, 2000); cell refinement: DENZO/SCALEPACK (Otwinowski & Minor, 1997); data reduction: DENZO/SCALEPACK; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg, 2008); software used to prepare material for publication: SHELXL97.

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: LH5433 ).

Acknowledgements

This work was supported by the Russian Fund for Basic Research (grant 11-03-90417) and the State Fund for Fundamental Research of Ukraine (grant No. F40.3/041). Financial support from the Visby Program through the Swedish Institute is gratefully acknowledged. Anatoly V. Khripun is thanked for experimental assistance.

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