Stabilization of cobalt(II) chloro-complexes with the butanediammonium cation

Cobalt(II) chlorocomplexes with empirical formulae (bnH2)2CoCl6·2H2O (1) and (bnH2)2CoCl6 (2), where bnH22+ represents the diprotonated species of putrescine (1,4-butanediamine), were prepared.