Kinetic Hydricity of Transition-Metal Hydrides toward Trityl Cation

Tan Yun Cheng; R. Morris Bullock

doi:10.1021/om00009a001

Kinetic Hydricity of Transition-Metal Hydrides toward Trityl Cation

Tan Yun Cheng, R. Morris Bullock

Pacific Northwest National Laboratory

Research output: Contribution to journal › Article

36 Citations (Scopus)

Abstract

The kinetics of hydride transfer from a series of metal hydrides (MH) to Ph₃C⁺BF₄^- (producing Ph₃CH and M---FBF₃) have been studied by stopped-flow methods in CH₂Cl₂ solution. Second-order rate constants at 25 °C span 5 orders of magnitude in kinetic hydricity, ranging from k = 5.0 × 10¹ M^-1 s^-1 for HMn(CO)₅ to k = 4.6 ×10⁶ M^-1s^-1 for trans-HMo(CO)₂(PMe₃)Cp.

Original language	English
Pages (from-to)	4031-4033
Number of pages	3
Journal	Organometallics
Volume	14
Issue number	9
DOIs	https://doi.org/10.1021/om00009a001
Publication status	Published - Sep 1995

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ASJC Scopus subject areas

Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry

Cite this

Cheng, T. Y., & Bullock, R. M. (1995). Kinetic Hydricity of Transition-Metal Hydrides toward Trityl Cation. Organometallics, 14(9), 4031-4033. https://doi.org/10.1021/om00009a001

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abstract = "The kinetics of hydride transfer from a series of metal hydrides (MH) to Ph3C+BF4- (producing Ph3CH and M---FBF3) have been studied by stopped-flow methods in CH2Cl2 solution. Second-order rate constants at 25 °C span 5 orders of magnitude in kinetic hydricity, ranging from k = 5.0 × 101 M-1 s-1 for HMn(CO)5 to k = 4.6 ×106 M-1s-1 for trans-HMo(CO)2(PMe3)Cp.",

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AB - The kinetics of hydride transfer from a series of metal hydrides (MH) to Ph3C+BF4- (producing Ph3CH and M---FBF3) have been studied by stopped-flow methods in CH2Cl2 solution. Second-order rate constants at 25 °C span 5 orders of magnitude in kinetic hydricity, ranging from k = 5.0 × 101 M-1 s-1 for HMn(CO)5 to k = 4.6 ×106 M-1s-1 for trans-HMo(CO)2(PMe3)Cp.

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10.1021/om00009a001