Platinum-Containing Polyoxometalates: Syn- and anti-[PtII2(α-PW11O39)2]10- and Formation of the Metal-Metal-Bonded di-PtIII Derivatives

Zhengguo Lin, Natalya V. Izarova, Aleksandar Kondinski, Xiaolin Xing, Ali Haider, Linyuan Fan, Nina Vankova, Thomas Heine, Bineta Keita, Jie Cao, Changwen Hu, Ulrich Kortz

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Abstract

The first examples of dimeric, di-PtII-containing heteropolytungstates are reported. The two isomeric di-platinum(II)-containing 22-tungsto-2-phosphates [anti-PtII2(α-PW11O39)2]10- (1 a) and [syn-PtII2(α-PW11O39)2]10- (2 a) were synthesized in aqueous pH 3.5 medium using one-pot procedures. Polyanions 1 a and 2 a contain a core comprising two face-on PtO4 units, with a Pt⋯Pt distance of 2.9-3 Å. Both polyanions were investigated by single-crystal XRD, IR, TGA, UV/Vis, 31P NMR, ESI-MS, CID-MS/MS, electrochemistry, and DFT. On the basis of DFT and electrochemistry, we demonstrated that the {Pt2II} moiety in 1 a and 2 a can undergo fully reversible two-electron oxidation to {Pt2III}, accompanied by formation of a single Pt-Pt bond. Hence we have discovered the novel subclass of PtIII-containing heteropolytungstates.

Original languageEnglish
Pages (from-to)5514-5519
Number of pages6
JournalChemistry - A European Journal
Volume22
Issue number16
DOIs
Publication statusPublished - 2016 Apr 11

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Organic Chemistry

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    Lin, Z., Izarova, N. V., Kondinski, A., Xing, X., Haider, A., Fan, L., Vankova, N., Heine, T., Keita, B., Cao, J., Hu, C., & Kortz, U. (2016). Platinum-Containing Polyoxometalates: Syn- and anti-[PtII2(α-PW11O39)2]10- and Formation of the Metal-Metal-Bonded di-PtIII Derivatives. Chemistry - A European Journal, 22(16), 5514-5519. https://doi.org/10.1002/chem.201600555