6533b7cefe1ef96bd1257931

RESEARCH PRODUCT

Photochemical Synthesis and Reactivity of New Chloro-Bridged Complexes with Tungstenocene (η5-C5H5)(η5-C5H4PPh2)WClX (X = H, Cl) and Tetracarbonylmetal (Cr, W) Units

Virginie ComteClaude MoïseMarek M. Kubicki

subject

Inorganic ChemistryStereospecificityChemistryReactivity (chemistry)Lewis acids and basesCleavage (embryo)PhotochemistryBimetallic strip

description

Chloro-bridged bimetallic complexes (η5-C5H5)[η5-C5H4PPh2M′(CO)4]W(μ-Cl)X [X = Cl (3), × = H (4); M′ = Cr, W] were prepared by photochemical irradiation of (η5-C5H5)[η5-C5H4PPh2M′(CO)5]WClX [X = Cl (1), × = H (2); M′ = Cr, W]. The reactivity of the chloro-bridged complexes towards Lewis bases was studied; by exposure to CO or phosphanes, a facile cleavage of the chloro bridge accompanied by regio- and stereospecific coordination at M′ occurs. The X-ray structure of complex 3 (M′ = W) is reported.

https://doi.org/10.1002/(sici)1099-0682(199911)1999:11<2029::aid-ejic2029>3.0.co;2-j