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

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—H...O hydrogen bonds. Further O—H...O and O—H...N interactions give a three-dimensional structure. The free water molecule is disordered over two positions in a 0.787 (5):0.213 (5) ratio.