η2-BENZOPHENOZIRCONOCEN, EIN MODELL FUER DAS REACTIONSVERHALTEN EINES METALLAOXIRANS?

Article abstract of DOI:10.1016/S0022-328X(00)82564-4

Thermolysis of η²-benzoyl(phenyl)zirconocene yields the η²-benzophenonzirconocene complex 2, isolated as a dimer. 2 exhibits an ambivalent reactivity pattern.The formation of five-membered metallacycles from 2 and olefinic hydrocarbons possibly proceeds analogous to reactions of "normal" metal-olefin ?-complexes.However, both reactions with the electron-deficient olefins dimethylfumarate and -maleate and the behavior towards electrophilic and protic reagents as well as aromatic hydrocarbons might be interpreted in terms of a metallaoxirane-character of 2.