Stabilization of (SnS4)4− anion by coordinating to [TM(π-conjugated-ligand)m]n+ complex: a chain-like thiostannate(iv) {[Mn(phen)]2(SnS4)}n·nH2O exhibiting an unprecedented link mode of the (SnS4)4− anion

Abstract

The stabilization of the (SnS₄)⁴⁻ anion in the coordination of [Mn(phen)]²⁺ complexes brings about a novel compound {[Mn(phen)]₂(SnS₄)}_n·nH₂O (1), in which an unprecedented link mode of the (SnS₄)⁴⁻ anion is observed. Theoretical calculations indicate that TM complexes with big π-conjugated ligands, such as [Mn(phen)]²⁺, can serve as an excellent electron reservoir to stabilize the (SnS₄)⁴⁻ anion in 1, despite its strong condensation tendency. Magnetic measurements show the presence of strong antiferromagnetic interactions between the Mn²⁺ ions in 1.