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Volume 64 
Part 12 
Page m1510  
December 2008  

Received 31 October 2008
Accepted 1 November 2008
Online 8 November 2008

Key indicators
Single-crystal X-ray study
T = 291 K
Mean [sigma](C-C) = 0.003 Å
R = 0.033
wR = 0.092
Data-to-parameter ratio = 15.2
Details
Open access

Poly[bis([mu]-2,6-dimethylpyridinium-3,5-dicarboxylato-[kappa]2O3:O5)copper(II)]

aDepartment of Food and Environmental Engineering, Heilongjiang East College, Harbin 150086, People's Republic of China, and bCollege of Chemistry and Materials Science, Heilongjiang University, Harbin 150080, People's Republic of China
Correspondence e-mail: zhanghongkun2000@163.com

In the title coordination polymer, [Cu(C9H8NO4)2]n, the Cu atom, located on a twofold rotation axis, is four coordinate in a distorted square-planar environment. Each 2,6-dimethylpyridinium-3,5-dicarboxylate anion bridges two Cu atoms, forming a two-dimensional coordination polymer. A three-dimensional supramolecular network is built from N-H...O hydrogen bonds involving the pyridinium NH and the carboxyl COO groups.

Related literature

For the synthesis of 2,6-dimethylpyridine-3,5-dicarboxylic acid, see: Checchi et al. (1959[Checchi, S. (1959). Gazz. Chim. Ital. 89, 2151-2162.]). For the crystal structures of some of its metal complexes, see: Gao et al. (2007[Gao, J.-S., Zhang, Y.-M., Li, B.-Y. & Hou, G.-F. (2007). Acta Cryst. E63, m2717.]); Shi et al. (2007[Shi, A.-E., Li, B.-Y., Hou, G.-F. & Gao, J.-S. (2007). Acta Cryst. E63, m471-m473.]); Zeng et al. (2000[Zeng, Q.-Q., Jennings, M. C., Puddephatt, R. J. & Muir, K. W. (2000). CrystEngComm, 2, 73-76.], 2002[Zeng, Q.-Q., Jennings, M. C., Puddephatt, R. J. & Muir, K. W. (2002). Inorg. Chem. 41, 5174-5186.]).

[Scheme 1]

Experimental

Crystal data
  • [Cu(C9H8N2O4)2]

  • Mr = 451.87

  • Orthorhombic, P b c n

  • a = 8.2003 (16) Å

  • b = 16.234 (3) Å

  • c = 13.708 (3) Å

  • V = 1824.9 (6) Å3

  • Z = 4

  • Mo K[alpha] radiation

  • [mu] = 1.25 mm-1

  • T = 291 (2) K

  • 0.26 × 0.24 × 0.19 mm

Data collection
  • Rigaku R-AXIS RAPID diffractometer

  • Absorption correction: multi-scan (ABSCOR; Higashi, 1995[Higashi, T. (1995). ABSCOR. Rigaku Corporation, Tokyo, Japan.]) Tmin = 0.733, Tmax = 0.801

  • 16747 measured reflections

  • 2097 independent reflections

  • 1754 reflections with I > 2[sigma](I)

  • Rint = 0.051

Refinement
  • R[F2 > 2[sigma](F2)] = 0.033

  • wR(F2) = 0.092

  • S = 1.09

  • 2097 reflections

  • 138 parameters

  • H atoms treated by a mixture of independent and constrained refinement

  • [Delta][rho]max = 0.41 e Å-3

  • [Delta][rho]min = -0.29 e Å-3

Table 1
Hydrogen-bond geometry (Å, °)

D-H...A D-H H...A D...A D-H...A
N1-H8...O3i 0.82 (3) 1.88 (3) 2.698 (2) 177 (3)
Symmetry code: (i) [x, -y+1, z+{\script{1\over 2}}].

Data collection: RAPID-AUTO (Rigaku, 1998[Rigaku (1998). RAPID-AUTO. Rigaku Corporation, Tokyo, Japan.]); cell refinement: RAPID-AUTO; data reduction: CrystalStructure (Rigaku/MSC, 2002[Rigaku/MSC (2002). CrystalStructure. Rigaku/MSC Inc., The Woodlands, Texas, USA.]); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); molecular graphics: SHELXTL (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); software used to prepare material for publication: SHELXL97.


Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: NG2511 ).


Acknowledgements

The authors thank the Project of the Science and Technology Foundation of Heilongjiang Provincial Education Department (grant No. 11523041) and Heilongjiang East College for supporting this study.

References

Checchi, S. (1959). Gazz. Chim. Ital. 89, 2151-2162.  [ChemPort]
Gao, J.-S., Zhang, Y.-M., Li, B.-Y. & Hou, G.-F. (2007). Acta Cryst. E63, m2717.  [CSD] [CrossRef] [details]
Higashi, T. (1995). ABSCOR. Rigaku Corporation, Tokyo, Japan.
Rigaku (1998). RAPID-AUTO. Rigaku Corporation, Tokyo, Japan.
Rigaku/MSC (2002). CrystalStructure. Rigaku/MSC Inc., The Woodlands, Texas, USA.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.  [CrossRef] [details]
Shi, A.-E., Li, B.-Y., Hou, G.-F. & Gao, J.-S. (2007). Acta Cryst. E63, m471-m473.  [CSD] [CrossRef] [details]
Zeng, Q.-Q., Jennings, M. C., Puddephatt, R. J. & Muir, K. W. (2000). CrystEngComm, 2, 73-76.  [CSD] [CrossRef]
Zeng, Q.-Q., Jennings, M. C., Puddephatt, R. J. & Muir, K. W. (2002). Inorg. Chem. 41, 5174-5186.  [ISI] [CSD] [CrossRef] [PubMed]


Acta Cryst (2008). E64, m1510  [ doi:10.1107/S1600536808035873 ]

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