Abstract
Polyoxometalates substituted by noble metal cations (PdII, RuIII, IrIV) of general formula (Bu4N)n[P2W17M(OH2)O61] are prepared by refilling the vacant site of the lacunary precursor α2-K10P2W17O61. Both 31P- and 183W-n.m.r. studies provide convincing evidence for the above structural assignment. The u.v.-vis and i.r. spectra are consistent with the first row transition metal substituted homologues. Electrochemical investigations by cyclic voltammetry in MeCN revealed four reversible one-electron redox couples, which are ascribed to the tungsten(VI→V) process of the tungsten-oxo framework.
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Liu, H., Yue, B., Sun, W. et al. Synthesis and characterization of noble-metal-substituted Dawson-type polyoxometalates. Transition Metal Chemistry 22, 321–325 (1997). https://doi.org/10.1023/A:1018445431311
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DOI: https://doi.org/10.1023/A:1018445431311