Synthesis and crystal structure of [PPh4]2[MoS4(CuBr)4]·Me2CO; the assembly of four copper(I) centres about a tetrathiomolybdate(VI) moiety

Abstract

Reaction of [MoS₄]^2– with CuX (1:4) in acetone produces the mixed-metal–sulphur complex anions [MoS₄(CuX)₄]^2–(X Cl or Br); a crystal structure determination for [PPh₄]₂[MoS₄(CuBr)₄]·Me₂CO shows that four edges of the tetrahedral MoS₄core are bridged by cu^I atoms giving an aggregate of approximate D_2d symmetry with µ₂-Br bridges linking these aggregates to form a one-dimensional polymeric anion.