Synthetic, Structural, and Kinetic Studies of [CpRu(CO)<sub>2</sub>(μ<sub>2</sub>-η<sup>1</sup>(<i>S</i>):η<sup>6</sup>-DBT)RuCp*][PF<sub>6</sub>]<sub>2</sub>: A Dibenzothiophene Bridge between Two Ruthenium Fragments
作者:Paul A. Vecchi、Arkady Ellern、Robert J. Angelici
DOI:10.1021/om050158y
日期:2005.7.1
The complexes [CpRu(CO)(2)(mu(2)-eta(1)(S):eta(6)-DBT)RuCp'](2+) (Cp' = eta(5)-C5H5 (3), eta(5)-C5Me5 (4)) were synthesized and shown by X-ray crystallography to contain a bridging dibenzothiophene ligand that is coordinated to CpRu(CO)(2)}(+) through the sulfur atom and to Cp'Ru}(+) through an arene ring (eta(6)). Kinetic studies of the displacement of the [Cp*Ru(eta(6)-DBT)](+) moiety in 4 by P(OPh)(3) show that the eta(6)-coordinated Cp*Ru}(+) group weakens the Ru-S bond, as compared to that in [CpRu(CO)(2)(eta(1)(S)-DBT)](+), and greatly increases the rate of DBT dissociation.