Related Experiment Videos
Conformational Studies by Dynamic NMR. 71.(1) Stereodynamics of Triisopropyl(aryl)silanes in Solution and in the
1Department of Organic Chemistry "A.Mangini", University of Bologna, Risorgimento, 4, Bologna 40136, Italy.
The Journal of Organic Chemistry
|May 18, 2000
Abstract:
A study has been carried out of the conformations of triisopropyl(aryl)silanes (i-Pr)(3)SiAr, (Ar = phenyl, 1-naphthyl, and 2-naphthyl) both as to the orientation of the three isopropyl groups and the conformation about the silicon-aromatic bonds. The report comprises dynamic NMR studies of conformational interconversions in solution and in the solid state as well as molecular mechanics calculations. The barriers for the stereomutation processes measured in the crystalline state were found significantly higher than those in solution.