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Abnormally Bound N‐Heterocyclic Carbene Complexes of Ruthenium: CH Activation of Both C4 and C5 Positions in the Same Ligand
Author(s) -
Ellul Charles E.,
Mahon Mary F.,
Saker Olly,
Whittlesey Michael K.
Publication year - 2007
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200701930
Subject(s) - carbene , ruthenium , denticity , chemistry , ligand (biochemistry) , stereochemistry , medicinal chemistry , photochemistry , crystallography , polymer chemistry , catalysis , crystal structure , organic chemistry , receptor , biochemistry
A bit unusual : “Abnormal” carbene formation from a free monodentate N‐heterocyclic carbene occurs upon the room temperature reaction of [Ru 3 (CO) 12 ] with 1,3‐di‐ tert ‐butylimidazol‐2‐ylidene. Subsequent heating leads to CH activation at the remaining C5 position to afford a μ 3 ‐bridging heterocycle, which is eliminated as imidazolium upon reaction with H 2 .