Hexakis(dimethyl sulfoxide-κO)zinc(II) polyiodide

Abstract

The title compound, [Zn{(CH3)2SO}6]I4, is a one-dimensional supramolecular polymer along a threefold rotation axis of the space group. It is built up from discrete [Zn{(CH3)2SO}6]2+ units connected through non-classical hydrogen bonds to linear I42− polyiodide anions (C—H...I = 3.168 Å). The ZnII ion in the cation has an octahedral coordination geometry, with all six Zn—O bond lengths being equivalent, at 2.111 (4) Å. The linear polyiodide anion contains a neutral I2 molecule weakly coordinated to two iodide ions.