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Abstract
Two new manganese thioarsenates(V) [Mn(Hen)2(AsS4)2]·2(Hen) (1, en = ethylenediamine) and β-{[Mn(dien)2][Mn2(dien)2(AsS4)2] (2, dien = diethyleneamine) have been solvothermally synthesized and structurally characterized. 1 contains [Mn(Hen)2(AsS4)2]2− built from two [AsS4]3− anions bound to [Mn(Hen)2]4+, and two protonated Hen+ cations, which provide a rare example of monoprotonated ethylenediamine as monodentate ligand within chalcogenidoarsenates. 2 contains two conformations of a [Mn2(dien)2(AsS4)2]2− cluster constructed from two [Mn(dien)]2+ groups bridged by two μ-[AsS4]3− anions and charge compensating complex cations [Mn(dien)2]2+. Their optical properties have been characterized by UV–vis spectra and the theoretical band structure of 1 has also been studied.
