catena-Poly[[bis­(5-chloro-2-nitro­benzoato)copper(II)]-bis­(μ-5-chloro-2-nitro­benzoato)]

Lim, E.K.; Teoh, S.G.; Razak, I.A.; Fun, H.-K.

doi:10.1107/S1600536809001895

Volume 65
Part 2
Pages m211-m212
February 2009

Received 17 December 2008
Accepted 15 January 2009
Online 23 January 2009

Key indicators
Single-crystal X-ray study
T = 100 K
Mean (C-C) = 0.003 Å
R = 0.035
wR = 0.116
Data-to-parameter ratio = 19.1
Details

catena-Poly[[bis(5-chloro-2-nitrobenzoato)copper(II)]-bis(-5-chloro-2-nitrobenzoato)]

Eng Khoon Lim,^a Siang Guan Teoh,^a Ibrahim Abdul Razak ^b ⁺ and Hoong-Kun Fun ^b ^*

^aSchool of Chemical Sciences, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia, and ^bX-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
Correspondence e-mail: hkfun@usm.my

In the title compound, [Cu₂(C₇H₃ClNO₄)₄]_n, the coordination geometry around each Cu^II ion is distorted square-pyramidal. The CuO₅ coordination is formed by five O atoms from the carboxylate groups of five 5-chloro-2-nitrobenzoate ligands. This coordination leads to the formation of centrosymmetric binuclear units which are edge-shared, forming a linear chain along the a axis, with the Cu^II ions alternately separated by 2.5891 (4) and 3.1763 (4) Å. The chains are interconnected into a three-dimensional network by C-HO interactions.

Related literature

For general background, see: Balaraman et al. (2006); Tomoya et al. (2005). For bond-length data, see: Allen et al. (1987). For related structures, see: Kabbani et al. (2004); Stachová et al. (2004).

Experimental

Crystal data

[Cu₂(C₇H₃ClNO₄)₄]
M_r = 929.30
Triclinic, $[P \overline 1]$
a = 5.0353 (1) Å
b = 11.8001 (3) Å
c = 13.8595 (3) Å
= 84.539 (2)°
= 85.553 (1)°
= 85.610 (2)°
V = 815.30 (3) Å³
Z = 1
Mo K radiation
= 1.72 mm^-1
T = 100.0 (1) K
0.47 × 0.21 × 0.08 mm

Data collection

Bruker APEXII CCD area-detector diffractometer
Absorption correction: multi-scan (SADABS; Bruker, 2005) T_min = 0.498, T_max = 0.875
11613 measured reflections
4656 independent reflections
3994 reflections with I > 2(I)
R_int = 0.034

Refinement

R[F² > 2(F²)] = 0.035
wR(F²) = 0.116
S = 1.10
4656 reflections
244 parameters
H-atom parameters constrained
_max = 0.72 e Å^-3
_min = -1.04 e Å^-3

Table 1
Selected bond lengths (Å)

Cu1-O5	1.942 (2)
Cu1-O6ⁱ	1.946 (2)
Cu1-O2ⁱⁱ	1.950 (2)
Cu1-O1ⁱⁱⁱ	2.008 (2)
Cu1-O1	2.165 (2)
Symmetry codes: (i) -x, -y, -z+1; (ii) x-1, y, z; (iii) -x+1, -y, -z+1.

Table 2
Hydrogen-bond geometry (Å, °)

D-HA	D-H	HA	DA	D-HA
C2-H2AO4^iv	0.93	2.44	3.254 (3)	146
C11-H11AO8^v	0.93	2.46	3.384 (3)	172
C14-H14AO4ⁱ	0.93	2.54	3.417 (3)	156
Symmetry codes: (i) -x, -y, -z+1; (iv) -x, -y+1, -z+1; (v) -x+1, -y, -z.

Data collection: APEX2 (Bruker, 2005); cell refinement: SAINT (Bruker, 2005); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL and PLATON (Spek, 2003).

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: CI2748 ).

Acknowledgements

HKF thanks the Malaysian Government and Universiti Sains Malaysia for the Science Fund grant No. 305/PFIZIK/613312.

References

Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkins Trans. 2, pp. S1-19.
Balaraman, S., Venugopal, R., Palanisamy, U. M., Helen, S. & Mallayan, P. (2006). J. Inorg. Biochem. 100, 316-330.
Bruker (2005). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.
Kabbani, A. T., Zaworotko, M. J., Abourahma, H., Walsh, R. D. B. & Hammud, H. H. (2004). J. Chem. Crystallogr. 11, 749-756.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Spek, A. L. (2003). J. Appl. Cryst. 36, 7-13.
Stachová, P., Valigura, D., Koman, M., Melník, M., Korabik, M., Mrozinki, J. & Glowiak, T. (2004). Polyhedron, 23, 1303-1308.
Tomoya, H., Yuko, K., Eriko, E., Takashi, S., Hidekazu, A., Makoto, C., Pitchumony, T. S. & Mallayan, P. (2005). J. Inorg. Biochem. 99, 1205-1219.

metal-organic compounds