Acta Cryst. (2003). E59, m961-m963  [ doi:10.1107/S1600536803021573 ]

catena-Poly[[[tetraaquacobalt(II)]--pyrazine] phthalate]

S.-Y. Yang, L.-S. Long, R.-B. Huang, L.-S. Zheng and S. W. Ng

Abstract: The Co atom, the pyrazine heterocycle and the phthalate dianion are in special positions in the crystal structure of the title compound, [Co(C₄H₄N₂)(H₂O)₄](C₈H₄O₄); the Co atom and the N-heterocycle are located on sites of mmm symmetry, whereas the dianion is disordered over a 2mm site. The four water ligands constitute a square plane surrounding the Co atom, and the other two coordination sites are occupied by the N atoms of two different N-heterocycles. The cationic entity propagates as a linear -pyrazine-bridged chain that runs along the a axis of the orthorhombic unit cell. The dianion interacts with the Co atom through hydrogen bonds.

Online 7 October 2003

Copyright © International Union of Crystallography
IUCr Webmaster