Bis(2,2′-bipyridyl dioxide-κ2N,N′)bis(tricyanomethanido)cobalt(II) dihydrate

Abstract

In the title compound, [Co(C4N3)2(C10H8N2O2)]·2H2O, a novel tricyanomethanide complex, the CoII atom is located on an inversion center and has a distorted octahedral coordination with two 2,2′-bipyridyl dioxide (dpdo) molecules and two trans tricyanomethanide (tcm) anions. The equatorial plane is formed by the four O atoms of the two chelating dpdo ligands, with one N atom of each of the two tcm ligands occupying an apical position. There is a disordered solvent water molecule in the asymmetric unit (occupancy ratio 0.63:0.37). These water molecules result in the formation of O—H...O and O—H...N hydrogen bonds, building a layer parallel to (100). The layers are linked by C—H...N hydrogen-bonding interactions, leading to a three-dimensional network.