Tris-Triphenylsiloxy Compounds of Aluminum
Abstract
The reaction of A1Me3 with three equivalents of HOSiPh3 in THF results in the formation of the solvent complex A1(OSiPh3)3(THF) (1). Hydrolysis of 1 yields the stable water complex A1(OSiPh3)3(H2O)(THF)2(2) in which the THF molecules are hydrogen bonded to the coordinated water ligand. Compounds 1 and 2 have been fully characterized by 1H, 13C, 17O, 27A1 and 29 Si NMR and IR spectroscopy. In addition, variable temperature 1H NMR of 2 has been employed to investigate the steric interactions between the phenyl rings of adjacent siloxide ligands. The molecular structures of the solvates 1. (THF) and 2. (THF) 1.25 have been determined by X-ray crystallography. 1. (THF): Monoclinic P21/c, a=10.03 (1), b=23.758(6), C = 23.294 (7) alpha, beta=101.13 (6), Z = 4, R = 0. 084, Rw = 0.094.2.(THF)1.25 : Cubic Pa3, a = 23.034 (3) Alpha, Z = 4, R = 0.093, Rw = 0.099.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 12, 1992
- Accession Number
- ADA250141
Entities
People
- Alison C. Warren
- Allen W. Apblett
- Andrew R. Barron
Organizations
- Harvard University