Carbon dioxide hydrosilylation promoted by cobalt pincer complexes

Margaret L. Scheuermann; Scott P. Semproni; Iraklis Pappas; Paul J. Chirik

doi:10.1021/ic501901n

Carbon dioxide hydrosilylation promoted by cobalt pincer complexes

Margaret L. Scheuermann, Scott P. Semproni, Iraklis Pappas, Paul J. Chirik

Chemistry

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115 Scopus citations

Abstract

The addition of carbon dioxide to (^tBuPNP)CoH[^tBuPNP = 2,6 - bis(di-tert-butylphosphinomethyl)pyridine] resulted in rapid insertion into the Co-H bond to form the corresponding K^1- formate complex, which has been structurally characterized. Treatment of (^tBuPNP)CoH with PhSiH₃ resulted in oxidative addition to form trans-(^tBuPNP)CoH₂(SiH₂Ph), which undergoes rapid exchange with excess free silane. With 0.5 mol % (^tBuPNP)CoH, the catalytic hydrosilylation of CO₂ with PhSiH3 to a mixture of oligomers containing silyl formate, bis(silyl)acetyl, and silyl ether subunits has been observed.

Original language	English (US)
Pages (from-to)	9463-9465
Number of pages	3
Journal	Inorganic Chemistry
Volume	53
Issue number	18
DOIs	https://doi.org/10.1021/ic501901n
State	Published - Sep 15 2014

All Science Journal Classification (ASJC) codes

Inorganic Chemistry
Physical and Theoretical Chemistry

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title = "Carbon dioxide hydrosilylation promoted by cobalt pincer complexes",

abstract = "The addition of carbon dioxide to (tBuPNP)CoH[tBuPNP = 2,6 - bis(di-tert-butylphosphinomethyl)pyridine] resulted in rapid insertion into the Co-H bond to form the corresponding K1- formate complex, which has been structurally characterized. Treatment of (tBuPNP)CoH with PhSiH3 resulted in oxidative addition to form trans-(tBuPNP)CoH2(SiH2Ph), which undergoes rapid exchange with excess free silane. With 0.5 mol % (tBuPNP)CoH, the catalytic hydrosilylation of CO2 with PhSiH3 to a mixture of oligomers containing silyl formate, bis(silyl)acetyl, and silyl ether subunits has been observed.",

author = "Scheuermann, {Margaret L.} and Semproni, {Scott P.} and Iraklis Pappas and Chirik, {Paul J.}",

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T1 - Carbon dioxide hydrosilylation promoted by cobalt pincer complexes

AU - Scheuermann, Margaret L.

AU - Semproni, Scott P.

AU - Pappas, Iraklis

AU - Chirik, Paul J.

PY - 2014/9/15

Y1 - 2014/9/15

N2 - The addition of carbon dioxide to (tBuPNP)CoH[tBuPNP = 2,6 - bis(di-tert-butylphosphinomethyl)pyridine] resulted in rapid insertion into the Co-H bond to form the corresponding K1- formate complex, which has been structurally characterized. Treatment of (tBuPNP)CoH with PhSiH3 resulted in oxidative addition to form trans-(tBuPNP)CoH2(SiH2Ph), which undergoes rapid exchange with excess free silane. With 0.5 mol % (tBuPNP)CoH, the catalytic hydrosilylation of CO2 with PhSiH3 to a mixture of oligomers containing silyl formate, bis(silyl)acetyl, and silyl ether subunits has been observed.

AB - The addition of carbon dioxide to (tBuPNP)CoH[tBuPNP = 2,6 - bis(di-tert-butylphosphinomethyl)pyridine] resulted in rapid insertion into the Co-H bond to form the corresponding K1- formate complex, which has been structurally characterized. Treatment of (tBuPNP)CoH with PhSiH3 resulted in oxidative addition to form trans-(tBuPNP)CoH2(SiH2Ph), which undergoes rapid exchange with excess free silane. With 0.5 mol % (tBuPNP)CoH, the catalytic hydrosilylation of CO2 with PhSiH3 to a mixture of oligomers containing silyl formate, bis(silyl)acetyl, and silyl ether subunits has been observed.

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JO - Inorganic Chemistry

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Carbon dioxide hydrosilylation promoted by cobalt pincer complexes

Abstract

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