Received 10 October 2012
The title compound, [Co(C2N3)2(C3H7NO)2]n, is a triclinic polymorph of the previously reported monoclinic structure [Tong et al. (2003). Acta Cryst. E59, m405-m407]. The CoII ion lies on an inversion centre and adopts an almost regular octahedral N4O2 coordination geometry. Adjacent CoII atoms are connected by two bridging dicyanamide ligands, resulting in the formation of neutral chains parallel to the b axis. The title complex is isotypic with the MnII analogue but not with the NiII analogue.
For the design and synthesis of metal-organic compounds, see: Long & Yaghi (2009). For the structures of the MnII and NiII analogues, see: Batten et al. (1999); Shen & Yuan (2005). For the structure of the monoclinic polymorph, see: Tong et al. (2003).
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: RZ5015 ).
This work was supported by the Foundation of Jiangsu University (08JDG037).
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Tong, M.-L., Zhou, A.-J., Hu, S., Chen, X.-M. & Ng, S. W. (2003). Acta Cryst. E59, m405-m407.