Bis{2-[(guanidinoimino)­meth­yl]phenolato-κ(3) N,N′,O}cobalt(III) chloride hemihydrate

The title compound, [Co(C(8)H(9)N(4)O)(2)]Cl·0.5H(2)O, is a solvatomorph of the corresponding trihydrate. Unlike in the structure of the latter compound, there are two different cations in the asymmetric unit of the title compound. The ligand mol­ecules are deprotonated at the phenol O atom and octa­hedrally coordinate the Co(III) atoms through the azomethine N and phenolate O atoms in a mer configuration. In the crystal, the cations, chloride ions and lattice water mol­ecules are linked by N—H⋯O, N—H⋯Cl, O—H⋯Cl and O—H⋯O inter­actions, forming a two-dimensional network parallel to (10-1).