<sup>1</sup>Pyridine and phosphine functionalised N-heterocyclic carbene complexes of rhodium and iridium

Stylianides, Neoklis, Danopoulos, Andreas A and Tsoureas, Nikolaos (2005) <sup>1</sup>Pyridine and phosphine functionalised N-heterocyclic carbene complexes of rhodium and iridium. Journal of Organometallic Chemistry, 690 (24-25). pp. 5948-5958. ISSN 0022-328X

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Abstract

The pyridine functionalised N-heterocyclic carbene complexes [M(κ2-NCDIPP)(COD)]+A-, NCDIPP=3-(2,6-Pr2iC6H3)-1-[2-(3-picolyl)]-imidazol-2-ylidene, A-=[Ar4FB]-, [{3,5-(CF3)2C6H2}4B] -, M = Rh, 1b, Ir, 4, have been prepared in two steps by reaction of the [M(COD)Cl]2 with the isolated NCDIPP to [Rh(κ1-NCDIPP)(COD)Cl], 2, and [Ir(κ 2-NCDIPP)(COD)Cl], 3, followed by anion exchange with Na+A-. The phosphine functionalised N-heterocyclic carbene complex [Rh(PCH2Cmes)2]Br, 6, PCH 2Cmes = 1-(diphenylphosphino-methyl)-3-(2,4,6-Me 3C6H2)-imidazol-2-ylidene, was prepared by the reaction of the [Rh(COD)Cl]2 with the corresponding N-heterocyclic carbene generated in situ. Monomeric [Rh(PCH2CH2C DIPP)(acac)], 7 was prepared by an analogous reactions from [Rh(COE)2(acac)]. In contrast, phosphine functionalised N-heterocyclic carbene complexes of iridium (I) were not easily accessible. However, the reaction of [Ir(COD)(μ-Cl)2(μ-H)]2 with PCH 2CH2Cmes gave complex [Ir(COD)(PCH 2CH2Cmes)Br], 8, in which the carbene is coordinated to the metal in an 'abnormal' mode. © 2005 Elsevier B.V. All rights reserved.

Item Type: Article
Keywords: Arduengo carbene, iridium, rhodium, functionalised heterocyclic carbene, pyridine, crystal structure
Schools and Departments: School of Life Sciences > Chemistry
SWORD Depositor: Mx Elements Account
Depositing User: Mx Elements Account
Date Deposited: 01 Nov 2021 10:27
Last Modified: 01 Nov 2021 10:30
URI: http://sro.sussex.ac.uk/id/eprint/102585

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