Stereoelectronic effects on arene rotation: The structure and fluxionality of [1,4-C6H4(SiMe3)2]Cr(CO)2PPh3 and 1,3,5-C6H3tBu3Cr(CO)2PPh3

James A.S. Howell; Claire J. Beddows; Paula J. O'Leary; Paul C. Yates; Patrick McArdle; Desmond Cunningham; Hugo E. Gottlieb

doi:10.1016/s0022-328x(96)06537-0

Stereoelectronic effects on arene rotation: The structure and fluxionality of [1,4-C₆H₄(SiMe₃)₂]Cr(CO)₂PPh₃ and 1,3,5-C₆H₃^tBu₃Cr(CO)₂PPh₃

James A.S. Howell, Claire J. Beddows, Paula J. O'Leary, Paul C. Yates, Patrick McArdle, Desmond Cunningham, Hugo E. Gottlieb

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Barriers to metal-arene ring rotation in [1,4-C₆H₄(SiMe₃)₂]Cr(CO)₂PPh₃ and (1,3,5-C₆H₃^tBu₂)Cr(CO)₂PPh₃ are lowered relative to a previously reported barrier of 32 kJ mol^-1 for (1,4-C₆H₄^tBu₂)Cr(CO)₂PPh₃. Reasons for the decreased barriers are discussed in the light of crystal structure determinations of these complexes.

Original language	English
Pages (from-to)	21-27
Number of pages	7
Journal	Journal of Organometallic Chemistry
Volume	527
Issue number	1-2
DOIs	https://doi.org/10.1016/s0022-328x(96)06537-0
State	Published - 11 Jan 1997

Keywords

Arene
Carbonyl
Chromium
Fluxionality
Phospine

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10.1016/s0022-328x(96)06537-0

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title = "Stereoelectronic effects on arene rotation: The structure and fluxionality of [1,4-C6H4(SiMe3)2]Cr(CO)2PPh3 and 1,3,5-C6H3tBu3Cr(CO)2PPh3",

abstract = "Barriers to metal-arene ring rotation in [1,4-C6H4(SiMe3)2]Cr(CO)2PPh3 and (1,3,5-C6H3tBu2)Cr(CO)2PPh3 are lowered relative to a previously reported barrier of 32 kJ mol-1 for (1,4-C6H4tBu2)Cr(CO)2PPh3. Reasons for the decreased barriers are discussed in the light of crystal structure determinations of these complexes.",

keywords = "Arene, Carbonyl, Chromium, Fluxionality, Phospine",

author = "Howell, {James A.S.} and Beddows, {Claire J.} and O'Leary, {Paula J.} and Yates, {Paul C.} and Patrick McArdle and Desmond Cunningham and Gottlieb, {Hugo E.}",

year = "1997",

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doi = "10.1016/s0022-328x(96)06537-0",

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TY - JOUR

T1 - Stereoelectronic effects on arene rotation

T2 - The structure and fluxionality of [1,4-C6H4(SiMe3)2]Cr(CO)2PPh3 and 1,3,5-C6H3tBu3Cr(CO)2PPh3

AU - Howell, James A.S.

AU - Beddows, Claire J.

AU - O'Leary, Paula J.

AU - Yates, Paul C.

AU - McArdle, Patrick

AU - Cunningham, Desmond

AU - Gottlieb, Hugo E.

PY - 1997/1/11

Y1 - 1997/1/11

N2 - Barriers to metal-arene ring rotation in [1,4-C6H4(SiMe3)2]Cr(CO)2PPh3 and (1,3,5-C6H3tBu2)Cr(CO)2PPh3 are lowered relative to a previously reported barrier of 32 kJ mol-1 for (1,4-C6H4tBu2)Cr(CO)2PPh3. Reasons for the decreased barriers are discussed in the light of crystal structure determinations of these complexes.

AB - Barriers to metal-arene ring rotation in [1,4-C6H4(SiMe3)2]Cr(CO)2PPh3 and (1,3,5-C6H3tBu2)Cr(CO)2PPh3 are lowered relative to a previously reported barrier of 32 kJ mol-1 for (1,4-C6H4tBu2)Cr(CO)2PPh3. Reasons for the decreased barriers are discussed in the light of crystal structure determinations of these complexes.

KW - Arene

KW - Carbonyl

KW - Chromium

KW - Fluxionality

KW - Phospine

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VL - 527

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JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

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ER -

Stereoelectronic effects on arene rotation: The structure and fluxionality of [1,4-C₆H₄(SiMe₃)₂]Cr(CO)₂PPh₃ and 1,3,5-C₆H₃^tBu₃Cr(CO)₂PPh₃

Abstract

Keywords

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