Monocyclopentadienyl yttrium chemistry: incorporation of alkoxides as supporting ligands and synthesis of [Y(C₅Me₅)(OC₆H₃Bu^t₂)(µ-H)]₂

Abstract

Reaction of the crystallographically characterised [Y(C5Me5)(OC6H3But2)2]2 with LiCH(SiMe3)2 affords the mixed alkyl–alkoxide species [Y(C5Me5){CH(SiMe3)2}(OC6H3But2)]3 which, on subsequent hydrogenation, gives the hydride bridged dimer [{Y(C5Me5)(OC6H3But2)(µ-H)}2]4; 89Y NMR spectra of these, and related complexes, allows C5Me5, OC6H3But2 and CH(SiMe3)2 group contributions to be determined.