Synthesis, structure, and characterization of a novel selenidoarsenate: Incorporation of [Mn(phen)2]2 + cations into ∞1[AsIII2Se3(Se2)]2 − chains

Hydrothermal reaction of a mixture of As, Mn, Se, en (en = ethylenediamine) and phen (phen = 1,10-phenanthroline) yields a novel inorganic–organic hybrid solid [Mn(phen)2]n[AsIII2Se3(Se2)]n (1). It contains the one-dimensional (1D) ∞1[AsIII2Se3(Se2)]2 − chains, in which Se22 − performs as bridging ligand to connect [As2Se5] (AsIII2Se3(Se2)) units. The compound is a semiconductor with a band gap of 2.0 eV, and the variable-temperature magnetic susceptibility data suggests that the compound exhibits the antiferromagnetic interaction between the Mn2 + ions.