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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14 Citations (Scopus)

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

Bibliographical note

Funding Information:
U.K. acknowledges the German Science Foundation (DFG, KO- 2288/20-1), the COST Actions CM1203 (PoCheMoN) and CM1006 (EUFEN), and the Chinese Academy of Sciences President's International Fellowship Initiative (Grant No. 2015VMA041). N.V.I. thanks the DFG (IZ-60/1-1) for financial support. We kindly acknowledge Johnson Matthey Plc for a loan of PtII salts. J.C. and C.H. thank the National Natural Science Foundation of China (21371025, 21173021, 21373027), the 111 Project (B07012), and 973 Program (2014CB932103). We acknowledge Dr. Maria Barsukova-Stuckart for some assistance with lab work.

Publisher Copyright:
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Organic Chemistry

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