Syntheses, Structures, and Spectroscopic Properties of Alkoxide, Hydroxide, and Siloxide Complexes with (#eta#~3-Allyl) Mo Moieties

摘要

Salts with binuclear anions of the general formula [(#eta#~3-C_3H_4R)(CO)_2Mo(#mu#-OR')_2(#mu#-OR")Mo(CO)_2(#eta#-C_3H_4R)]~- (R = H, R', R" = Me, 2; R = CH_3, R' = CH(CH_3)_2, R" = OH, 3; R = CH_3, R' = OH, R" = OSiMe_3, 4) have been synthesised via reaction of [(#eta#~3-C_3H_4R)Mo(CO)_2(CH_3CN)_2 (thf) ~+BF_4~- 1, with NaOMe, NaO~iPr, and KOSiMe_3. All products were characterised spectroscopically and investigated by single crystal X-ray analysis. In the case of 3 low temperature 2D-NMR spectra revealed that the solid state structure is maintained in solution and that the compound shows a trigonal twist-rearrangement at room temperature.