Preparation and Characterization of the Monomeric Copper(II) Siloxide Complex Cu(OSi(OCMe3)3)2(py)2.

摘要

Trialkoxysiloxy ligands, -OSi(OR)3 have not been extensively employed in transition-metal chemistry. Our interest in these ligands stems from their potential to form new types of siloxy complexes with interesting chemical properties. For example, M-OSi(OR)3 complexes may exhibit properties that resemble catalytic metal species supported on a silica surface. Also, such compounds may serve as convenient molecular precursors to oxide and silicate materials via hydrolysis or thermolysis. To our knowledge, the only transition-metal trialkoxysiloxy complexes that have been reported are the titanium derivatives (RO)3TiOSi(OR)3(R=(n)Pr(4), (i)Bu(5), ((+)BuO)3TiO(i)Pr)(3) and (+)BuO)3SiO2TiX2, (X = (n);Pr(4), acac)3, and the airconium complexes Zr(OSi(O(+)Bu)3)4(6) and (+)BuO)3SiO,2ZrX2(X = O(i)Pr)(3) acac)(6).