Negative Ion Mass Spectrometry of Closo-Carboranes.
Abstract
The negative ion mass spectra of the small closo-carbonanes, 1,5-C2B3H5, 1,2-C2B4H6, 1,6-C2B4H6, and 2,4-C2B5H7 exhibit much more intense P-1 ions than parent ions, indicating the ease with which conjugate base anions of these cage compounds are formed. Ionization efficiency diagrams were gathered for the parent regions as well as for important fragments. These suggest that negative ions of closo-carbonanes are formed with somewhat difficulty than those of nido-carboranes which appears to reflect the lack of bridge hydrogens in the former. Percentage composition of carborane mixtures have been determined using a combination of mass spectral patterns and energy dependency information. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1972
- Accession Number
- AD0745339
Entities
People
- Costello Brown
- James F. Howard
- Thomas Onak
Organizations
- California State University, Los Angeles