The crystal structure of nonachlorodimolybdenum(V) heptachlorodioxodimolybdate(V)

Abstract

The compound Mo₂Cl₈O was formed as a minor product in the reaction of molybdic acid with thionyl chloride. Its structure has been determined by the heavy-atom method from 1 265 reflections, measured with a diffractometer, and refined by full-matrix least-squares methods to R 0.066. Crystals are monoclinic, space group P2/c, with a= 10.01(1), b= 6.27(1), c= 17.89(2)Å, β= 101.8(3)°. The structure consists of singly chlorine-bridged, binuclear cations [Mo₂Cl₉]⁺ and triply chlorine-bridged binuclear anions [Mo₂Cl₇O₂]^– which are linked into chains by weak interactions through the oxygen atoms.