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Binuclear Intermediates in Oxidation Reactions: [(Me3SiC≡C)Me2(bipy)Pt−PtMe2(bipy)]+ in the Oxidation of PtIIMe2(bipy) (bipy = 2,2′-Bipyridine) by IPh(C≡CSiMe3)(OTf) (OTf = Triflate)
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Abstract
A study of the reaction of PtMe2(bipy) with IPh(C≡CSiMe3)(OTf) at low temperature in acetone, leading to detection of the Pt−Pt-bonded cation [Pt2Me4(C≡CSiMe3)(bipy)2]+, an intermediate in the oxidation of PtII to PtIV, is reported. The cation is assessed as PtIII−PtIII ↔ PtIV−PtII, and at the other extreme may be regarded as a cationic alkynylplatinum(IV) center, “[PtIVMe2(C≡CSiMe3)(bipy)]+”, stabilized by “PtIIMe2(bipy)” as a donor ligand. The detection and isolation of the [Pt2Me4(C≡CSiMe3)(bipy)2]+ cation provides a number of insights into the mechanisms of oxidation reactions.
Citing Articles
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This article has been cited by 10 ACS Journal articles (5 most recent appear below).
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History
- Published In Issue June 03, 2009
- Article ASAPMay 07, 2009
- Received: April 08, 2009
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