Accession Number : AD0274603

Title :   APPEARANCE AND IONIZATION POTENTIALS OF SELECTED FRAGMENTS FROM DECABORANE B10H14

Corporate Author : MARTIN CO BALTIMORE MD RESEARCH INST FOR ADVANCED STUDIES

Personal Author(s) : KAUFMAN,JOYCE J. ; KOSKI,W.S.

Report Date : 19 MAR 1962

Pagination or Media Count : 1

Abstract : The appearance potentials of selected ions from decaborane B10H14 (99.68% B11) were measured mass spectroscopically. A set of apparently selfconsistent ionization potentials for decaborane and various B10Hn fragments were calculated from these appearance potentials, using what little thermochemical bond energy data are available, combined with the authors' interpretation of the processes taking place on ionization and fragmentation. A computer program to calculate monoisotopic fragmentation patterns from mass spectral raw data was written. From the mass spectrum of B10H14 at 70 ev the monoisotopic fragmentation pattern of decaborane was calculated. For comparison, from mass spectral raw data at 70 ev of decaborane containing normal isotopic abundances of B10 and B11, several different monoisotopic fragmentation patterns of decaborane were calculated which varied epen ing upon the method of choice of the original percentage B10 in the molecule. (Author)

Descriptors :   *DECABORANES, *IONIZATION POTENTIALS, BORON COMPOUNDS, CHEMICAL BONDS, IONS, ISOTOPES, MASS SPECTROSCOPY, MEASUREMENT

Distribution Statement : APPROVED FOR PUBLIC RELEASE