H. Kunkely et A. Vogler, Photoreactivity of bis(tricyclohexylphosphine)benzylidene ruthenium dichloride (Grubbs's catalyst), INORG CHIM, 325(1-2), 2001, pp. 179-181
The carbene complex Ru-II(CHPh)(PCy3)(2)Cl-2 (CY = cyclohexyl) in benzene u
ndergoes a photochemical release of a phosphine ligand with phi = 2.5 x 10(
-3) at lambda (irr) = 546 nm. The reactive excited state is assumed to be a
ligand field triplet. It is suggested that the photodissociation is initia
ted by a distortion of the complex from a square-planar towards a trigonal-
bipyramidal structure. (C) 2001 Elsevier Science B.V. All rights reserved.