Controlling transformations in the assembly of polyoxometalate clusters: {Mo11V7}, {Mo17V8} and {Mo72V30}

[摘要]：The reaction of molybdate with vanadium(V) in the presence of sulfite anions is explored showing how, via cation control, stepwise assembly through the {Mo11V7} cluster yields a {M-25} cluster-based compound, [(Mo11V5V2O52)-V-VI-V-V-O-IV(mu(9)-SO3)((Mo6VO22)-V-VI-O-V)](10-)(1a), which was first discovered using cryospray mass spectrometry, whereas switching the cation away from ammonium allows the direct formation of the spherical 'Keplerate' {Mo72V30} cluster.

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