Redetermination of cis-bis­(ethyl­ene­diamine-κ2NN′)bis­(nitrito-κN)cobalt(III) (ethyl­enediamine-κ2NN′)tetra­kis­(nitrito-κN)cobaltate(III) monohydrate

摘要

The structure of the title compound, [Co(NO2)2(NH2CH2CH2NH2)2][Co(NO2)4(NH2CH2CH2NH2)]·H2O, was redetermined with a modern CCD-equipped diffractometer. In comparison with the original determination based on photographic data [Kushi et al. (1976). Inorg. Nucl. Chem. Lett. >12, 629–633], the current study allows the location of reliable postions for the H atoms and thus leads to better understanding of the inter­ionic and inter­molecular inter­actions. The crystal structure consists of an octa­hedrally coordinated cationic Co^III complex ion, an octa­hedrally coordinated anionic Co^III complex ion and a lattice water mol­ecule. The complex cation, complex anion and lattice water mol­ecule are connected by an intricate network of O—H⋯O and N—H⋯O hydrogen bonds, forming a three-dimensional structure.