title: Platinum-Containing Polyoxometalates: syn- and anti-[Pt(II)2(α-PW11O39)2](10-) and Formation of the Metal-Metal-Bonded di-Pt(III) Derivatives.
abstract: The first examples of dimeric, di-Pt(II) -containing heteropolytungstates are reported. The two isomeric di-platinum(II)-containing 22-tungsto-2-phosphates [anti-Pt(II)2(α-PW11O39)2](10-) (1 a) and [syn-Pt(II)2(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, (31) P NMR, ESI-MS, CID-MS/MS, electrochemistry, and DFT. On the basis of DFT and electrochemistry, we demonstrated that the {Pt2(II)} moiety in 1 a and 2 a can undergo fully reversible two-electron oxidation to {Pt2(III)}, accompanied by formation of a single Pt-Pt bond. Hence we have discovered the novel subclass of Pt(III)-containing heteropolytungstates.
authors.affiliation: Department of Life Sciences and Chemistry, Jacobs University, P.O. Box 750 561, 28725, Bremen, Germany.
authors.forename: Zhengguo
authors.initials: Z
authors.lastname: Lin
authors.affiliation: Department of Life Sciences and Chemistry, Jacobs University, P.O. Box 750 561, 28725, Bremen, Germany.|Forschungszentrum Jülich, Peter Grünberg Institute, PGI-6, 52425, Jülich, Germany.|Nikolaev Institute of Inorganic Chemistry, Prospekt Lavrentyeva 3, 630090, Novosibirsk, Russia.
authors.forename: Natalya V
authors.identifier: http://orcid.org/0000-0001-5631-1930
authors.initials: NV
authors.lastname: Izarova
authors.affiliation: Department of Physics and Earth Sciences, Jacobs University, P.O. Box 750 561, 28725, Bremen, Germany.
authors.forename: Aleksandar
authors.initials: A
authors.lastname: Kondinski
authors.affiliation: Department of Life Sciences and Chemistry, Jacobs University, P.O. Box 750 561, 28725, Bremen, Germany.
authors.forename: Xiaolin
authors.initials: X
authors.lastname: Xing
authors.affiliation: Department of Life Sciences and Chemistry, Jacobs University, P.O. Box 750 561, 28725, Bremen, Germany.
authors.forename: Ali
authors.initials: A
authors.lastname: Haider
authors.affiliation: Key Laboratory of Cluster Science, Ministry of Education of China, Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry, Beijing Institute of Technology, Beijing, 100081, PR China.
authors.forename: Linyuan
authors.initials: L
authors.lastname: Fan
authors.affiliation: Department of Physics and Earth Sciences, Jacobs University, P.O. Box 750 561, 28725, Bremen, Germany.|Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie, Universität Leipzig, Linnéstr. 2, 04103, Leipzig, Germany.
authors.forename: Nina
authors.initials: N
authors.lastname: Vankova
authors.affiliation: Department of Physics and Earth Sciences, Jacobs University, P.O. Box 750 561, 28725, Bremen, Germany.|Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie, Universität Leipzig, Linnéstr. 2, 04103, Leipzig, Germany.
authors.forename: Thomas
authors.initials: T
authors.lastname: Heine
authors.affiliation: Université Paris-Sud, Laboratoire de Chimie-Physique, UMR 8000 CNRS, 91405, Orsay, France.
authors.forename: Bineta
authors.initials: B
authors.lastname: Keita
authors.affiliation: Key Laboratory of Cluster Science, Ministry of Education of China, Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry, Beijing Institute of Technology, Beijing, 100081, PR China.
authors.forename: Jie
authors.initials: J
authors.lastname: Cao
authors.affiliation: Key Laboratory of Cluster Science, Ministry of Education of China, Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry, Beijing Institute of Technology, Beijing, 100081, PR China.
authors.forename: Changwen
authors.initials: C
authors.lastname: Hu
authors.affiliation: Department of Life Sciences and Chemistry, Jacobs University, P.O. Box 750 561, 28725, Bremen, Germany. u.kortz@jacobs-university.de.
authors.forename: Ulrich
authors.identifier: http://orcid.org/0000-0002-5472-3058
authors.initials: U
authors.lastname: Kortz
keywords: ESI-mass spectrometry; electrochemistry; metal-metal bonds; platinum; polyoxometalates