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Abnormally bound N-heterocyclic carbene complexes of ruthenium: C-H activation of both C4 and C5 positions in the same ligand


Reference:

Ellul, C. E., Mahon, M. F., Saker, O. and Whittlesey, M. K., 2007. Abnormally bound N-heterocyclic carbene complexes of ruthenium: C-H activation of both C4 and C5 positions in the same ligand. Angewandte Chemie-International Edition, 46 (33), pp. 6343-6345.

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Abstract

Abnormal carbene ligand formation from a free monodentate N-heterocyclic carbene, 1,3-di-tert-butyl-2-imidazolylidene occurs by coordination of the ruthenium centers to C4-position, rather than via C2-atom. Reaction of Ru3(CO)12 with free imidazolylidene 1,3-tBu2C3H2N2 gave [(1,3-tBu2C3H2N2-kC4)(CO)3Ru[Ru(CO)4]2] (1), having C2-position protonated, which undergoes thermal rearrangement and C5-H-activation at 50-70 Deg yielding [(micro -1,3-tBu2C3HN2-kC4:kC5)(micro -H)Ru3(CO)9] (2). Crystal structures of 1 and 2 are reported.

Details

Item Type Articles
CreatorsEllul, C. E., Mahon, M. F., Saker, O. and Whittlesey, M. K.
Uncontrolled Keywordsimidazolylidenes, imidazolylidene hydro bridging ligand triruthenium nonacarbonyl cluster prepn structure, prep (preparation) (bridging, complexes, ruthenium complexes, ligands role, thermal rearrangement and c-h-bond activation of abnormally bound and bridging imidazolylidene triruthenium complexes), transition metal complexes role, molecular structure (of abnormally bound and bridging imidazolylidene triruthenium carbonyl complexes), bond carbon hydrogen activation imidazolylidene ruthenium complex, ruthenium carbonyl cluster imidazolylidene abnormal activation metalation trinuclear complex, five-membered, crystal structure, crystal structure ruthenium carbonyl cluster abnormal bound imidazolylidene, metalation (prepn., carbonyl complexes role, activation, mol structure ruthenium carbonyl cluster abnormal bound imidazolylidene, structure, ract (reactant or reagent) (ruthenium, ract (reactant or reagent) (carbene complexes, prp (properties), rct (reactant), prep (preparation), prepn., ract (reactant or reagent) (transition metal complexes, ract (reactant or reagent) (nitrogen, heterocyclic compounds role, carbene complexes role, ruthenium, bond (carbon-hydrogen, spn (synthetic preparation)
DepartmentsFaculty of Science > Chemistry
RefereedYes
StatusPublished
ID Code4608

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