Tris(2,2′-bipyridine-κ2N,N′)cadmium(II) bis­(perchlorate) hemihydrate

Zhang, W.; Jiang, Z.; Lu, L.

doi:10.1107/S1600536808036593

Volume 65
Part 1
Page m7
January 2009

Received 4 November 2008
Accepted 7 November 2008
Online 3 December 2008

Key indicators
Single-crystal X-ray study
T = 173 K
Mean (C-C) = 0.005 Å
Disorder in solvent or counterion
R = 0.034
wR = 0.107
Data-to-parameter ratio = 14.0
Details

Tris(2,2'-bipyridine-²N,N')cadmium(II) bis(perchlorate) hemihydrate

Weiguang Zhang,^a ^* Zhengjing Jiang ^a and Lude Lu ^a

^aKey Laboratory for Soft Chemistry and Functional Materials of the Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, People's Republic of China
Correspondence e-mail: zhangweiguang650@sohu.com

The asymmetric unit of the title compound, [Cd(C₁₀H₈N₂)₃](ClO₄)₂·0.5H₂O, consists of one complex [Cd(bpy)₃]²⁺ cation (bpy = 2,2'-bipyridine), two perchlorate anions and one water molecule with half-occupancy. The central cadmium(II) ion is bound to six N atoms from three bpy ligands in a distorted octahedral coordination, with Cd-N bond distances ranging from 2.304 (3) to 2.395 (2) Å.

Related literature

For applications of metal complexes of 2,2'-bipyridine and its derivatives, see: Kuang et al. (2006). For cadmium complexes, see: Kundu et al. (2005); Ranjbar et al. (2007); Shi et al. (2006); Zheng et al. (2005).

Experimental

Crystal data

[Cd(C₁₀H₈N₂)₃](ClO₄)₂·0.5H₂O
M_r = 788.87
Triclinic, $[P \overline 1]$
a = 8.1704 (3) Å
b = 11.0282 (5) Å
c = 18.3875 (7) Å
= 104.631 (1)°
= 92.652 (1)°
= 100.520 (1)°
V = 1568.68 (11) Å³
Z = 2
Mo K radiation
= 0.93 mm^-1
T = 173 (2) K
0.20 × 0.16 × 0.12 mm

Data collection

Bruker SMART CCD area-detector diffractometer
Absorption correction: multi-scan (SADABS; Bruker, 2000) T_min = 0.82, T_max = 0.90
19563 measured reflections
6067 independent reflections
5114 reflections with I > 2(I)
R_int = 0.037

Refinement

R[F² > 2(F²)] = 0.034
wR(F²) = 0.107
S = 1.01
6067 reflections
434 parameters
H-atom parameters constrained
_max = 0.44 e Å^-3
_min = -0.54 e Å^-3

Table 1
Selected geometric parameters (Å, °)

Cd1-N4	2.304 (3)
Cd1-N2	2.312 (3)
Cd1-N6	2.330 (3)
Cd1-N3	2.329 (3)
Cd1-N5	2.383 (3)
Cd1-N1	2.395 (2)

Data collection: SMART (Bruker, 2000); cell refinement: SAINT (Bruker, 2000); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HG2440 ).

Acknowledgements

This work was supported financially by the National Natural Science Foundation of China (grant No. 50572039) and the Natural Science Foundation of Jiangsu Province (BK2006199).

References

Bruker (2000). SMART, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.
Kuang, D., Klein, C., Snaith, H. J., Moser, J.-E., Humphry-Baker, R., Comte, P., Zakeeruddin, S. M. & Gratzel, M. (2006). Nano Lett. 6, 769-773.
Kundu, N., Mandal, D., Chaudhury, M. & Tiekink, E. R. T. (2005). Appl. Organomet. Chem. 19, 1268-1270.
Ranjbar, Z. R., Morsali, A. & Zhu, L.-G. (2007). J. Coord. Chem. 6, 667-676.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Shi, J.-M., Chen, J.-N. & Liu, L.-D. (2006). Acta Cryst. E62, m2094-m2095.
Zheng, S.-T., Zhang, J., Xu, J.-Q. & Yang, G.-Y. (2005). J. Solid State Chem. 178, 3740-3746.

metal-organic compounds

Tris(2,2'-bipyridine-2N,N')cadmium(II) bis(perchlorate) hemihydrate