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C-C and C-H bond activation reactions in N-heterocyclic carbene complexes of ruthenium
Authors:Jazzar Rodolphe F R  Macgregor Stuart A  Mahon Mary F  Richards Stephen P  Whittlesey Michael K
Affiliation:Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK.
Abstract:Thermolysis of Ru(PPh3)3(CO)H2 with the N-heterocyclic carbene bis(1,3-(2,4,6-trimethylphenyl)imidazol-2-ylidene) (IMes) results in C-C activation of an Ar-CH3 bond in one of the mesityl rings of the carbene ligand. Upon addition of IMes to Ru(PPh3)3(CO)H2 at room temperature in the presence of an alkene, C-H bond activation is observed instead. The thermodynamics of these C-C and C-H cleavage reactions have been probed using density functional theory.
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