The bis(biuretato)cobaltate(III) ion: a paramagnetic planar CoN4 species

Abstract

In the paramagnetic (3·5 B.M.) planar bis-(3-n-propylbiuretato)cobaltate(III) ion the cobalt is co-ordinated to four deprotonated amide nitrogen atoms, the u.v. spectrum being in accord with the assumption of a low-lying spin triplet term.