INOR 470 |
| Perfluoroaryl boranes are widely employed as co-catalysts in single site olefin polymerization processes. Perfluoroaryl diboranes, possessing borane centers in geographic proximity are a subclass of this family of compounds that are in theory capable of chelating neutral and anionic bases, although only the latter are commonly observed to be chelated by both centers. The resulting anions are exceptionally weakly coordinating. We have prepared examples of such compounds and studied their coordination behavior with neutral Lewis bases that may or may not have the capability to bridge Lewis acid sites in an effort to delineate the kinetic and thermodynamic factors which determine the bonding mode. In exploring the chemistry of protic Lewis bases such as alcohols or water with such diboranes, we have found that strong Bronsted acids capable of initiating cationic polymerizations under unusual conditions result. Recent results in this arena of chemistry will be presented. |
|
Polyfunctional Organoboranes: From Molecules to Materials
1:30 PM-5:40 PM, Monday, 11 September 2006 Moscone Center -- Room 302, Oral
Division of Inorganic Chemistry |