Accession Number:

AD0641578

Title:

ANALYSIS OF BORANES AND CARBORANES BY MASS SPECTROMETRY.

Descriptive Note:

Technical rept.,

Corporate Author:

SPACE-GENERAL CORP LOS ANGELES CALIF CENTER FOR RESEARCH AND EDUCATION

Report Date:

1966-10-12

Pagination or Media Count:

33.0

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

Subject Categories:

  • Inorganic Chemistry
  • Organic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE