Negative-Ion Mass Spectra of Nido Carboranes.
Abstract
The negative ion mass spectra of 2,3-dicarbahexaborane(8), 2-methyl-nido-2,3-dicarbahexaborane(8) and 2,3-dimethylnido-2,3-dicarbahexaborane(8) have been investigated. Evidence has been found to show that formation of negative ions in these nido carboranes predominately via resonance capture and dissociative resonance capture mechanisms. With the aid of deuterium labelling experiments, a diagnostic fragmentation giving a P-1 anion which is specific for loss of a bridge hydrogen has been found. Discrete and narrow electron energy ranges for electron capture have been determined and the electron energy dependence on ion intensities and fragmentation in the lower voltage regions have been studied. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1972
- Accession Number
- AD0739716
Entities
People
- Costello L. Brown
- Kenneth P. Gross
- Thomas Onak
Organizations
- California State University, Los Angeles