Preparation and Characterization of Some Polyborazines
Abstract
The current study suggests that condensation reactions of Borazine with B-haloborazines by elimination of trimethylhalosilane proceed with substantial opening of borazine rings. Nevertheless, the process can be utilized for the preparation of borazine analogues of polyphenyls in reasonable yield. Once formed, the polyborazinyls seem to be chemically and thermally significantly more stable than those polyborazines, where individual borazine rings are bridged by nitrogen moieties. Of the latter, polyborazines of the di(borazin-2-yl)amine type or oligomeric species (of presumably cyclic structure) appear to be the preferential products of condensation reactions. The condensation of methylthioboron species with aminoborazines can be used only in limited instances for the preparation of polyborazines, since various side- reactions can occur to give mixtures of quite similar products, which are difficult to separate.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1991
- Accession Number
- ADA239483
Entities
People
- J. Serwatowska
- J. Serwatowski
- Junwu Bai
- Kurt S. Niedenzu
Organizations
- University of Kentucky