Solution identification and solid state characterisation of a heterometallic polyoxometalate {Mo11V7}: [MoVI11VV5VIV2O52(μ9-SO3)]7−

A polyoxomolybdenum/vanadium-sulfite {M18} cluster-based compound, [MoVI11VV5VIV2O52(μ9-SO3)]7−, is reported that exhibits a unique structural motif, arising from the incorporation of five VV and two VIV ions into a {M18} cluster framework templated by SO32−; this cluster compostion was first identified using cryospray mass spectrometry.