Fischer Carbene Complexes of Iridium(I) for Application in Catalytic Transfer Hydrogenation

G. Kabelo Ramollo; Ian Strydom; Manuel A. Fernandes; Andreas Lemmerer; Stephen O. Ojwach; Juanita L. Van Wyk; Daniela I. Bezuidenhout

doi:10.1021/acs.inorgchem.0c00079

Fischer Carbene Complexes of Iridium(I) for Application in Catalytic Transfer Hydrogenation

G. Kabelo Ramollo, Ian Strydom, Manuel A. Fernandes, Andreas Lemmerer, Stephen O. Ojwach, Juanita L. Van Wyk, Daniela I. Bezuidenhout

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

12 Scopus citations

Abstract

New examples of the very rare class of iridium(I) Fischer carbene complexes (FCCs) are reported from the facile transmetalation from group 6 FCCs. Postcomplexation modification of either the carbene ligand or the ancillary coligands results in a tunable Ir^I metal center, for unprecedented application as a (pre)catalyst in a benchmark transfer hydrogenation reaction. The introduction of an aminocarbene ligand with a pendant N-donor moiety capable of hemilabile coordination yielded the best catalytic results with turnover frequencies reaching 445 h^-1 and requiring 0.1 mol % catalyst and 0.5 mol % base loading, respectively.

Original language	English
Pages (from-to)	4810-4815
Number of pages	6
Journal	Inorganic Chemistry
Volume	59
Issue number	7
DOIs	https://doi.org/10.1021/acs.inorgchem.0c00079
State	Published - 6 Apr 2020
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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title = "Fischer Carbene Complexes of Iridium(I) for Application in Catalytic Transfer Hydrogenation",

abstract = "New examples of the very rare class of iridium(I) Fischer carbene complexes (FCCs) are reported from the facile transmetalation from group 6 FCCs. Postcomplexation modification of either the carbene ligand or the ancillary coligands results in a tunable IrI metal center, for unprecedented application as a (pre)catalyst in a benchmark transfer hydrogenation reaction. The introduction of an aminocarbene ligand with a pendant N-donor moiety capable of hemilabile coordination yielded the best catalytic results with turnover frequencies reaching 445 h-1 and requiring 0.1 mol % catalyst and 0.5 mol % base loading, respectively.",

author = "Ramollo, {G. Kabelo} and Ian Strydom and Fernandes, {Manuel A.} and Andreas Lemmerer and Ojwach, {Stephen O.} and {Van Wyk}, {Juanita L.} and Bezuidenhout, {Daniela I.}",

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doi = "10.1021/acs.inorgchem.0c00079",

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T1 - Fischer Carbene Complexes of Iridium(I) for Application in Catalytic Transfer Hydrogenation

AU - Ramollo, G. Kabelo

AU - Strydom, Ian

AU - Fernandes, Manuel A.

AU - Lemmerer, Andreas

AU - Ojwach, Stephen O.

AU - Van Wyk, Juanita L.

AU - Bezuidenhout, Daniela I.

PY - 2020/4/6

Y1 - 2020/4/6

N2 - New examples of the very rare class of iridium(I) Fischer carbene complexes (FCCs) are reported from the facile transmetalation from group 6 FCCs. Postcomplexation modification of either the carbene ligand or the ancillary coligands results in a tunable IrI metal center, for unprecedented application as a (pre)catalyst in a benchmark transfer hydrogenation reaction. The introduction of an aminocarbene ligand with a pendant N-donor moiety capable of hemilabile coordination yielded the best catalytic results with turnover frequencies reaching 445 h-1 and requiring 0.1 mol % catalyst and 0.5 mol % base loading, respectively.

AB - New examples of the very rare class of iridium(I) Fischer carbene complexes (FCCs) are reported from the facile transmetalation from group 6 FCCs. Postcomplexation modification of either the carbene ligand or the ancillary coligands results in a tunable IrI metal center, for unprecedented application as a (pre)catalyst in a benchmark transfer hydrogenation reaction. The introduction of an aminocarbene ligand with a pendant N-donor moiety capable of hemilabile coordination yielded the best catalytic results with turnover frequencies reaching 445 h-1 and requiring 0.1 mol % catalyst and 0.5 mol % base loading, respectively.

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JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 7

ER -

Fischer Carbene Complexes of Iridium(I) for Application in Catalytic Transfer Hydrogenation

Abstract

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