Rhodium(I) and iridium(I) complexes of pyrazolyl-N-heterocyclic carbene ligands

Barbara A. Messerle; Michael J. Page; Peter Turner

doi:10.1039/b603455a

Rhodium(I) and iridium(I) complexes of pyrazolyl-N-heterocyclic carbene ligands

Barbara A. Messerle^*, Michael J. Page, Peter Turner

^*Corresponding author for this work

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

24 Citations (Scopus)

Abstract

Several Rh(i) and Ir(i) complexes containing an N-heterocyclic carbene-pyrazolyl chelate ligand have been synthesised. Determination of the single-crystal X-ray structure of the Ir(i) complex showed a novel binding mode with the iridium centre coordinated to two ligands via two carbene donors in preference to one ligand forming the entropically favoured chelate. The hydrogenation activity of several of these complexes was investigated along with that of previously synthesised Rh(i) and Ir(i) complexes containing an analogous phosphine-pyrazolyl chelate.

Original language	English
Pages (from-to)	3927-3933
Number of pages	7
Journal	Dalton Transactions
Issue number	32
DOIs	https://doi.org/10.1039/b603455a
Publication status	Published - 2006
Externally published	Yes

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abstract = "Several Rh(i) and Ir(i) complexes containing an N-heterocyclic carbene-pyrazolyl chelate ligand have been synthesised. Determination of the single-crystal X-ray structure of the Ir(i) complex showed a novel binding mode with the iridium centre coordinated to two ligands via two carbene donors in preference to one ligand forming the entropically favoured chelate. The hydrogenation activity of several of these complexes was investigated along with that of previously synthesised Rh(i) and Ir(i) complexes containing an analogous phosphine-pyrazolyl chelate.",

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AU - Messerle, Barbara A.

AU - Page, Michael J.

AU - Turner, Peter

PY - 2006

Y1 - 2006

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AB - Several Rh(i) and Ir(i) complexes containing an N-heterocyclic carbene-pyrazolyl chelate ligand have been synthesised. Determination of the single-crystal X-ray structure of the Ir(i) complex showed a novel binding mode with the iridium centre coordinated to two ligands via two carbene donors in preference to one ligand forming the entropically favoured chelate. The hydrogenation activity of several of these complexes was investigated along with that of previously synthesised Rh(i) and Ir(i) complexes containing an analogous phosphine-pyrazolyl chelate.

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U2 - 10.1039/b603455a

DO - 10.1039/b603455a

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EP - 3933

JO - Dalton Transactions

JF - Dalton Transactions

IS - 32

ER -

Rhodium(I) and iridium(I) complexes of pyrazolyl-N-heterocyclic carbene ligands

Abstract

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