893418-32-1Relevant articles and documents
Role of Zr,Al Hydride Intermediate Structure and Dynamics in Alkene Hydroalumination with XAlBui2 (X = H, Cl, Bui), Catalyzed by Zr η5 Complexes
Parfenova, Lyudmila V.,Kovyazin, Pavel V.,Nifant'ev, Ilya E.,Khalilov, Leonard M.,Dzhemilev, Usein M.
, p. 3559 - 3570 (2015/08/06)
The zirconocene complexes L2ZrCl2 (L = C5H5, C5H4Me, Ind, C5Me5; L2 = rac-Me2C(2-Me-4-But-C5H2)2, meso-Me2C(2-Me-4-But-C5H2)2, rac-Me2C(3-But-C5H3)2, rac-Me2C(Ind)2, rac-Me2Si(Ind)2, and rac-C2H4(Ind)2) were tested as catalysts in alkene hydroalumination by the isobutylalanes XAlBui2 (X = H, Cl, Bui). A low-temperature NMR spectroscopy study on the structure and dynamics of Zr,Al intermediates formed in the L2ZrCl2-XAlBui2 systems showed that the intra- and intermolecular exchange in the bimetallic clusters, controlled by the steric factor of the η5 ligand and organoaluminum compound nature, determines the activity of the whole catalytic system. (Chemical Equation Presented).