Acta Cryst. (2009). E65, m1682  [ doi:10.1107/S1600536809049848 ]

Tetraaquadiazidocobalt(II) 4,4'-dicarboxylato-1,1'-ethylenedipyridinium dihydrate

K. Wang, Y.-Q. Wang, J.-Y. Zhang and E.-Q. Gao

Abstract: In the title compound, [Co(N₃)₂(H₂O)₄]·C₁₄H₁₂N₂O₄·2H₂O, the metal complex molecule is centrosymmetric, the Co(II) ion being six-coordinated by two azide N atoms and four aqua O atoms with a trans-octahedral geometry. The zwitterionic organic molecule is also centrosymmetric. In the crystal, the components are associated into a two-dimensional network through O-HO hydrogen bonds. Further O-HO and O-HN interactions give a three-dimensional structure. The free water molecule is disordered over two positions in a 0.787 (5):0.213 (5) ratio.

Online 25 November 2009

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