Synthesis, Structure, and Reactivity of ansa-Rhenocene Complexes
摘要:
Complexes of rhenocene (Cp2Re) with substitution at the cyclopentadienyl rings have been prepared from Cp2Re-Me by dilithitation of the Cp rings followed by reaction with Me-2-SiCl or Cl(SiMe2)(2)Cl to afford ansa-bridged species. Protonation of the resulting neutral Re methyl complexes gives thermally labile methyl hydride complexes. The thermal stability of the methyl hydride complex with a single silicon atom in the ansa bridge is enhanced with respect to the unbridged analogues.