Rhodium N-heterocyclic carbene complexes: Synthesis, structure, NMR studies and catalytic activity

Daryl P. Allen; Cathleen M. Crudden; Larry A. Calhoun; Ruiyao Wang; Andreas Decken

doi:10.1016/j.jorganchem.2005.07.037

Rhodium N-heterocyclic carbene complexes: Synthesis, structure, NMR studies and catalytic activity

Daryl P. Allen, Cathleen M. Crudden^*, Larry A. Calhoun, Ruiyao Wang, Andreas Decken

^*Corresponding author for this work

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

36 Citations (Scopus)

Abstract

The solid state structure, phosphine dissociation rates and catalytic activity of several Rh-N-heterocyclic carbene complexes were studied. Catalytic activity for the hydrogenation of β-methylstyrene was improved by up to two orders of magnitude upon the addition of copper chloride. The catalyst with the highest inherent activity was found to be [Rh(IMes)(P-p-FC₆H ₄)₃], although the p-methoxy derivative benefited the most from the addition of CuCl, giving turnover numbers of over 400 h^-1.

Original language	English
Pages (from-to)	5736-5746
Number of pages	11
Journal	Journal of Organometallic Chemistry
Volume	690
Issue number	24-25
DOIs	https://doi.org/10.1016/j.jorganchem.2005.07.037
Publication status	Published - 1 Dec 2005
Externally published	Yes

Keywords

Catalysis
Hydrogenation
N-heterocyclic carbene
Phosphine exchange
Rhodium
Saturation transfer

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10.1016/j.jorganchem.2005.07.037

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title = "Rhodium N-heterocyclic carbene complexes: Synthesis, structure, NMR studies and catalytic activity",

abstract = "The solid state structure, phosphine dissociation rates and catalytic activity of several Rh-N-heterocyclic carbene complexes were studied. Catalytic activity for the hydrogenation of β-methylstyrene was improved by up to two orders of magnitude upon the addition of copper chloride. The catalyst with the highest inherent activity was found to be [Rh(IMes)(P-p-FC6H 4)3], although the p-methoxy derivative benefited the most from the addition of CuCl, giving turnover numbers of over 400 h-1.",

keywords = "Catalysis, Hydrogenation, N-heterocyclic carbene, Phosphine exchange, Rhodium, Saturation transfer",

author = "Allen, {Daryl P.} and Crudden, {Cathleen M.} and Calhoun, {Larry A.} and Ruiyao Wang and Andreas Decken",

note = "Funding Information: We acknowledge financial support for this research from the Natural Sciences and Engineering Research Council of Canada (NSERC) in the form of research grants to CMC and scholarships to DPA, and support from the Canada Foundation for Innovation. ",

year = "2005",

month = dec,

day = "1",

doi = "10.1016/j.jorganchem.2005.07.037",

language = "English",

volume = "690",

pages = "5736--5746",

journal = "Journal of Organometallic Chemistry",

issn = "0022-328X",

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TY - JOUR

T1 - Rhodium N-heterocyclic carbene complexes

T2 - Synthesis, structure, NMR studies and catalytic activity

AU - Allen, Daryl P.

AU - Crudden, Cathleen M.

AU - Calhoun, Larry A.

AU - Wang, Ruiyao

AU - Decken, Andreas

N1 - Funding Information: We acknowledge financial support for this research from the Natural Sciences and Engineering Research Council of Canada (NSERC) in the form of research grants to CMC and scholarships to DPA, and support from the Canada Foundation for Innovation.

PY - 2005/12/1

Y1 - 2005/12/1

N2 - The solid state structure, phosphine dissociation rates and catalytic activity of several Rh-N-heterocyclic carbene complexes were studied. Catalytic activity for the hydrogenation of β-methylstyrene was improved by up to two orders of magnitude upon the addition of copper chloride. The catalyst with the highest inherent activity was found to be [Rh(IMes)(P-p-FC6H 4)3], although the p-methoxy derivative benefited the most from the addition of CuCl, giving turnover numbers of over 400 h-1.

AB - The solid state structure, phosphine dissociation rates and catalytic activity of several Rh-N-heterocyclic carbene complexes were studied. Catalytic activity for the hydrogenation of β-methylstyrene was improved by up to two orders of magnitude upon the addition of copper chloride. The catalyst with the highest inherent activity was found to be [Rh(IMes)(P-p-FC6H 4)3], although the p-methoxy derivative benefited the most from the addition of CuCl, giving turnover numbers of over 400 h-1.

KW - Catalysis

KW - Hydrogenation

KW - N-heterocyclic carbene

KW - Phosphine exchange

KW - Rhodium

KW - Saturation transfer

UR - http://www.scopus.com/inward/record.url?scp=27744436990&partnerID=8YFLogxK

U2 - 10.1016/j.jorganchem.2005.07.037

DO - 10.1016/j.jorganchem.2005.07.037

M3 - Article

AN - SCOPUS:27744436990

SN - 0022-328X

VL - 690

SP - 5736

EP - 5746

JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

IS - 24-25

ER -

Rhodium N-heterocyclic carbene complexes: Synthesis, structure, NMR studies and catalytic activity

Abstract

Keywords

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