Hydrocarbon C?H Bond Activation with Tp?Pt Complexes

Autor:	Joseph L. Templeton, Cynthia M. Norris
Rok vydání:	2005
Předmět:	chemistry.chemical_classification Alkane Chemistry Ligand chemistry.chemical_element Protonation General Medicine Medicinal chemistry Adduct Hydrocarbon Organic chemistry Lewis acids and bases Platinum Alkyl
Zdroj:	ChemInform. 36
ISSN:	1522-2667 0931-7597
DOI:	10.1002/chin.200507243
Popis:	Stabilization of platinum complexes resembling key intermediates in C-H bond activation has been achieved through the use of the strongly electron-donating hydridotris(3,5-dimethylpyrazolyl)borate (Tp') ligand. Isolation of stable alkyl(hydrido)platinum(IV) complexes, Tp'PtMe 2 H and Tp'PtMeH 2 , allowed us to investigate the mechanism of reductive alkane elimination from these complexes via (1) thermolysis, (2) Lewis acid addition, and (3) low temperature protonation. By replacing the alkyl group with SiR 3 and C 6 R 5 in the low temperature protonation of Tp'PtRH 2 , isolation of five-coordinate Pt(IV) complexes and Pt(II) η 2 -arene adducts, respectively, was achieved. These Pt(II)/Pt(IV) interconversions provide insight into the mechanisms by which these reagents activate strong C-H bonds and also provide a foundation for future plans to functionalize hydrocarbons.
Databáze:	OpenAIRE
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