4.5 Article

Molecular recognition utilizing complexes with NH,NR-stabilized carbene ligands

Journal

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Volume -, Issue 9, Pages 1210-1214

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.200601258

Keywords

carbene ligands; supramolecular chemistry; hydrogen bonds; homogeneous catalysis; N-heterocyclic carbenes

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Tungsten complex [W(NHC)(CO)(5)] (1) (NHC=NH,N-ethyl-substituted benzimidazolin-2-ylidene ligand) was prepared by transmetallation of lithiated 1-ethylbenzimidazole with the pentacarbonyltungsten complex fragment. The hydrogen-bonding ability of the carbene-NH group to substrates with carbonyl groups was investigated by NMR titration. Structural analogues to 1 with a catalytically active rhodium center show a distinct substrate-s elective hydrogenation behaviour. (c) Wiley-VCH Verlag GmbH & Co. KGaA, 6945t Weinheim, Germany, 2007)

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