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Issue 32, 2006
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Rhodium(I) and iridium(I) complexes of pyrazolyl-N-heterocyclic carbene ligands

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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.

Graphical abstract: Rhodium(i) and iridium(i) complexes of pyrazolyl-N-heterocyclic carbene ligands

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Publication details

The article was received on 07 Mar 2006, accepted on 25 May 2006 and first published on 09 Jun 2006


Article type: Paper
DOI: 10.1039/B603455A
Dalton Trans., 2006, 3927-3933

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

    B. A. Messerle, M. J. Page and P. Turner, Dalton Trans., 2006, 3927
    DOI: 10.1039/B603455A

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