Synthetic, Structural, and Kinetic Studies of [CpRu(CO)2(μ2-η1(S):η6-DBT)RuCp*][PF6]2: A Dibenzothiophene Bridge between Two Ruthenium Fragments
摘要:
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.
Synthetic, Structural, and Kinetic Studies of [CpRu(CO)2(μ2-η1(S):η6-DBT)RuCp*][PF6]2: A Dibenzothiophene Bridge between Two Ruthenium Fragments
摘要:
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.