Classical and novel ylide systems in organometallic chemistry
作者： H. Schmidbaur
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摘要: Ylide-based organometallic compounds have become an active research topic in several academic and industrial institutions. After a short literature account this article reflects the recent progress made author's laboratory, main attention being focussed on chemistry of phosphorus ylides with bulky substituents, unstrained or strained cyclic ylides, polyfunctional ylidic systems. Ylide complexes series group transition metals been obtained characterized by spectroscopic x-ray techniques. The examples representative molecules range from volatile magnesium mercury phosphoniummethylides via titanium(III) −(IV) metallocycles to gold(I) macrocycles. In combination formally related diphosphinomethanide ligand, formvery stable mono- binuclear products symmetrical structures. phosphametallocycles these species are allyl-metal as well metallocyclobutane
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