Abstract
In the title compound, K[Co(CO3)2(C10H8N2)]·2H2O, the Co(III) atom is coordinated by two bipyridine N atoms and four O atoms from two bidentate chelating carbonate anions, and thus adopts a distorted octahedral N2O4 environment. The [Co(bipy)(CO3)2]− (bipy is 2,2′-bipyridine) units are stacked along [100] via π–π stacking interactions, with interplanar distances between the bipyridine rings of 3.36 (4) and 3.44 (6) Å, forming chains. Classical O—H⋯O hydrogen-bonding interactions link the chains, forming channels along (100) in which the K+ ions reside and leading to a three-dimensional supramolecular architecture.
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