Trans-Bis(acetonitrile)tetraaquacobalt(II) dinitrate at 150 K

Abstract

In the title compound, [Co(CH3CN)2(H2O)4](NO3)2, the CoII cations occupy crystallographic inversion centres and adopt a distorted octahedral coordination geometry, with trans-disposed aceto­nitrile ligands. Extensive hydrogen-bonding interactions between the coordinated water ligands and the nitrate counter-anions lead to the formation of a three-dimensional framework. There are substantial differences between the structure of the title compound at 150 K and the previously reported structure at 293 K.