Cobalt complexes with 2-[(3-aminopropyl)amino]ethanethiol

The cobalt complexes with 2-[(3-aminopropyl)amino]ethanethiol (Hapaet), [{Co(apaet)2}2Co](ClO4)2 (1) and [Co(apaet)2]ClO4·CH3OH (2) were synthesized and the trinuclear and mononuclear features were elucidated by the elemental analysis, IR and UV–Vis spectroscopies, and magnetic susceptibility measurement. The X-ray crystal structure shows that 1 has a linear trinuclear structure consisting of octahedral–tetrahedral–octahedral coordination environments and 2 has an octahedral CoN4S2 chromophore with meridional chelation of apaet−.