Photochemische Reaktion von Pentacarbonyl(1-ethoxy-2-methyl-2-propenyliden)wolfram und Dekacarbonyldirhenium

Article abstract of DOI:10.1016/0022-328X(92)83147-A

Upon UV irradiation at 223 K pentacarbonyl (1-ethoxy-2-methyl-2-propenylidene)tungsten (1) and decacarbonyl-dirhenium (2) yield enneacarbonyl(μ-η^1:3-1-ethoxy-2-methyl-2-propenylidene)ditungsten (3), octacarbonyl(μ-η^1:3-1-ethoxy-2-methyl-2-propenylidene)dirhenium (4) and tridecacarbonyl-μ-η^1:3-1-ethoxy-2-methyl-2-propenylidene)dirhenium-tungsten (5).The molecular structure of the hetero-trinuclear compound 5 was determined by X-ray structure analysis.The three metal centers form a bent Re-W-Re spine.One of the Re-W bonds is bridged by a carbonyl and the η^1:3-1-ethoxy-2-methyl-2-propenylidene ligand.