Three New Thioantimonates(V): Solvothermal Syntheses and Crystal Structures of [M(chxn)₃]₃(SbS₄)₂·4H₂O (M = Ni, Co) and [Co(dien)₂][Co(tren)SbS₄]₂·4H₂O

Abstract

Abstract The three new thioantimonates(V) [Ni(chxn) 3 ] 3 (SbS 4 ) 2 ·4H 2 O ( I ), [Co(chxn) 3 ] 3 (SbS 4 ) 2 ·4H 2 O ( II ) (chxn is trans‐1,2‐diaminocyclohexane) and [Co(dien) 2 ][Co(tren)SbS 4 ] 2 ·4H 2 O ( III ) (dien is diethylenetriamine and tren is tris(2‐aminoethyl)amine) were synthesized under solvothermal conditions. Compounds I and II are isostructural crystallizing in space group C 2/ c . The structures are composed of isolated [M(chxn) 3 ] 2+ complexes (M = Ni, Co), [SbS 4 ] 3− anions and crystal water molecules. Short S···N/S···O/O···O separations indicate hydrogen bonding interactions between the different constituents. Compound III crystallizes in space group $P{\bar 1}$ and is composed of [Co(dien) 2 ] 2+ and [Co(tren)SbS 4 ] − anions and crystal water molecules. In the cationic complex the Co 2+ ion is in an octahedral environment of two dien ligands whereas in [Co(tren)SbS 4 ] − the Co 2+ ion is in a trigonal bipyramidal coordination of four N atoms of tren and one S atom of the [SbS 4 ] 3− anion, i.e., two different coordination polyhedra around Co 2+ coexist in this compound. Like in the former compounds an extended hydrogen bonding network connects the complexes and the water molecules into a three‐dimensional network.