Carbon Monoxide Promoted Reductive Elimination of Hydrogen from Tp‘ Platinum Complexes

Acid-assisted reductive elimination of hydrogen from Tp‘PtH3 and of methane and hydrogen from Tp‘PtMeH2 (Tp‘ = hydridotris(3,5-dimethylpyrazolyl)borate) is examined herein. Loss of H2 is observed from solutions containing platinum(IV) complexes of the type Tp‘Pt(R)(H)2 (R = Me, H) upon protonation a...

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Bibliographic Details
Published in:Journal of the American Chemical Society 2006-02, Vol.128 (6), p.2059-2066
Main Authors: West, Nathan M, Reinartz, Stefan, White, Peter S, Templeton, Joseph L
Format: Article
Language:English
Subjects:
Chemistry
Exact sciences and technology
Inorganic chemistry and origins of life
Kinetics and mechanism of reactions
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Summary:Acid-assisted reductive elimination of hydrogen from Tp‘PtH3 and of methane and hydrogen from Tp‘PtMeH2 (Tp‘ = hydridotris(3,5-dimethylpyrazolyl)borate) is examined herein. Loss of H2 is observed from solutions containing platinum(IV) complexes of the type Tp‘Pt(R)(H)2 (R = Me, H) upon protonation and addition of a ligand such as CO. Results of kinetic studies on reductive elimination of H2 and formation of [κ2-(HTp‘)Pt(R)(L)][BAr‘4] products from intermediates derived from Tp‘Pt(R)(H)2 precursors are described. Elimination appears to occur from cationic 6-coordinate [κ2-(HTp‘)Pt(R)(H)2(L)][BAr‘4] species.
ISSN:0002-7863
1520-5126
DOI:10.1021/ja056766m