ANALYSIS OF BORANES AND CARBORANES BY MASS SPECTROMETRY.
Abstract
Boranes and carboranes each have their own characteristic mass spectral patterns which serve as means for quick identification and analysis. The so-called 'stable' boranes fragment rather severely under electron impact, the 'unstable' boranes even moreso. Both types have broad, rounded spectral profiles. Closocarboranes which are a very stable class of compounds, on the other hand, are very resistant to fragmentation, and consequently display sharp cut-offs at their high mass numbers. Alkylated derivatives of both boranes and carboranes have the same general fragmentation patterns as do their nonalkylated parents. A useful mass spectrometric technique applicable to these compounds to determine the number of boron and carbon atoms involves careful measurement of the 13C- containing ion that appears above the normal cut-off peak. The method is illustrated with C4B6H12, the dimethyl derivative of the carborane, C2B6H8. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 12, 1966
- Accession Number
- AD0641578
Entities
People
- F. James Gerhart
- J. F. Ditter
- Robert E. Williams