Received 5 December 2012
aInstitute of Molecular Engineering and Advanced Materials, School of Chemical Engineering, Nanjing University of Science and Technology, 200 Xiaolingwei, Nanjing 210094, Jiangsu, People's Republic of China, and bInstitute of Science and Technology, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, People's Republic of China
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Cobalt(II) nitrate hexahydrate and sodium dicyanamide self-assembled in dimethylformamide (DMF) and 4-methylpyridine solutions to form the title compound, [Co(C2N3)2(C6H7N)2]n. The Co2+ ion lies on an inversion center and adopts an octahedral coordination geometry in which four N atoms from four different dicyanamide ligands lie in the equatorial plane and two 4-methylpyridine N atoms occupy the axial positions. The CoII atoms are connected by two bridging dicyanamide ligands, resulting in a chain parallel to the c axis. The chains are connected into a three-dimensional network by C-HN hydrogen bonds.
The design and syntheses of metal-organic compounds has attracted great attention not only as a result of their intriguing architectures and topologies (Eddaoudi et al., 2001), but also because of their potential applications (Banerjee et al., 2008).
Data collection: CrystalClear (Rigaku, 2008); cell refinement: CrystalClear; data reduction: CrystalClear; 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.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: RZ5034 ).
This work was supported by the National Natural Science Foundation of China (No. 50472048) and the Program for New Century Excellent Talents in Universities (NCET-05-0499).
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Rigaku (2008). CrystalClear. Rigaku Corp., Tokyo, Japan.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.