Steric Effects in the Kinetics of Organometallic Reactions: A Time-Resolved Infrared Study of [(η5-C5R5)Mn(CO)2] (R = H, Me or Et) in n-heptane Solution

Frank P.A. Johnson; Michael W. George; Viktor N. Bagratashvili; Lyudmila N. Vereshchagina; Martyn Poliakoff

doi:10.1070/MC1991v001n01ABEH000016

Steric Effects in the Kinetics of Organometallic Reactions: A Time-Resolved Infrared Study of [(η⁵-C₅R₅)Mn(CO)₂] (R = H, Me or Et) in n-heptane Solution

Frank P.A. Johnson, Michael W. George, Viktor N. Bagratashvili, Lyudmila N. Vereshchagina, Martyn Poliakoff

Research output: Journal Publication › Article › peer-review

32 Citations (Scopus)

Abstract

Fast time-resolved IR spectroscopy (microsecond timescale) is used to record the spectra and kinetics of photochemical reactions of [(η⁵-C₅R₅)Mn(CO)₃] (R = H, Me or Et) in n-heptane solution; second-order rate constants for reaction with H₂, N₂ and CO are ca. six times faster for [(C₅Et₅)Mn(CO)₂(n-hept)] than for [(C₅H₅)Mn(CO)₂(n-hept)] while the rate constants for the reaction of all three [(C₅R₅)Mn(CO)₂(n-hept)] intermediates with PPh₃ are almost identical.

Original language	English
Pages (from-to)	26-28
Number of pages	3
Journal	Mendeleev Communications
Volume	1
Issue number	1
DOIs	https://doi.org/10.1070/MC1991v001n01ABEH000016
Publication status	Published - 1991
Externally published	Yes

ASJC Scopus subject areas

General Chemistry

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10.1070/MC1991v001n01ABEH000016

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title = "Steric Effects in the Kinetics of Organometallic Reactions: A Time-Resolved Infrared Study of [(η5-C5R5)Mn(CO)2] (R = H, Me or Et) in n-heptane Solution",

abstract = "Fast time-resolved IR spectroscopy (microsecond timescale) is used to record the spectra and kinetics of photochemical reactions of [(η5-C5R5)Mn(CO)3] (R = H, Me or Et) in n-heptane solution; second-order rate constants for reaction with H2, N2 and CO are ca. six times faster for [(C5Et5)Mn(CO)2(n-hept)] than for [(C5H5)Mn(CO)2(n-hept)] while the rate constants for the reaction of all three [(C5R5)Mn(CO)2(n-hept)] intermediates with PPh3 are almost identical.",

author = "Johnson, {Frank P.A.} and George, {Michael W.} and Bagratashvili, {Viktor N.} and Vereshchagina, {Lyudmila N.} and Martyn Poliakoff",

year = "1991",

doi = "10.1070/MC1991v001n01ABEH000016",

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T2 - A Time-Resolved Infrared Study of [(η5-C5R5)Mn(CO)2] (R = H, Me or Et) in n-heptane Solution

AU - Johnson, Frank P.A.

AU - George, Michael W.

AU - Bagratashvili, Viktor N.

AU - Vereshchagina, Lyudmila N.

AU - Poliakoff, Martyn

PY - 1991

Y1 - 1991

N2 - Fast time-resolved IR spectroscopy (microsecond timescale) is used to record the spectra and kinetics of photochemical reactions of [(η5-C5R5)Mn(CO)3] (R = H, Me or Et) in n-heptane solution; second-order rate constants for reaction with H2, N2 and CO are ca. six times faster for [(C5Et5)Mn(CO)2(n-hept)] than for [(C5H5)Mn(CO)2(n-hept)] while the rate constants for the reaction of all three [(C5R5)Mn(CO)2(n-hept)] intermediates with PPh3 are almost identical.

AB - Fast time-resolved IR spectroscopy (microsecond timescale) is used to record the spectra and kinetics of photochemical reactions of [(η5-C5R5)Mn(CO)3] (R = H, Me or Et) in n-heptane solution; second-order rate constants for reaction with H2, N2 and CO are ca. six times faster for [(C5Et5)Mn(CO)2(n-hept)] than for [(C5H5)Mn(CO)2(n-hept)] while the rate constants for the reaction of all three [(C5R5)Mn(CO)2(n-hept)] intermediates with PPh3 are almost identical.

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Steric Effects in the Kinetics of Organometallic Reactions: A Time-Resolved Infrared Study of [(η⁵-C₅R₅)Mn(CO)₂] (R = H, Me or Et) in n-heptane Solution

Abstract

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