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Ruthenium–Olefin Complexes: Effect of Ligand Variation upon Geometry
Author(s) -
Anderson Donde R.,
O'Leary Daniel J.,
Grubbs Robert H.
Publication year - 2008
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200701362
Subject(s) - imes , ruthenium , ligand (biochemistry) , olefin fiber , carbene , chemistry , olefin metathesis , adduct , stereochemistry , metathesis , medicinal chemistry , catalysis , organic chemistry , biochemistry , polymer , receptor , polymerization
The development of a model system to study ruthenium–olefin complexes relevant to the mechanism of olefin metathesis has been reported recently. Upon addition of the ligand precursor 1,2‐divinylbenzene to [RuCl 2 (Py) 2 (H 2 IMes)(CHPh)] (H 2 IMes=1,3‐dimesityl‐4,5‐dihydroimidazol‐2‐ylidene), two ruthenium–olefin adducts are formed. Based on 1 H NMR spectroscopy experiments and X‐ray crystallographic analysis, these complexes are assigned as side‐bound isomers in which the olefin and H 2 IMes ligands are coordinated cis to each other. Herein is reported an investigation of the generality of these observations through variation of the N ‐heterocyclic carbene ligand and the ligand precursor.