Accession Number : AD0781054

Title :   Substituent and H/D Randomization in the Mass Spectra of Substituted Diphenylacetylenic Compounds,

Corporate Author : NATIONAL RESEARCH COUNCIL OF CANADA HALIFAX (NOVA SCOTIA) ATLANTIC REGIONAL LAB

Personal Author(s) : Safe,S.

Report Date : 06 APR 1973

Pagination or Media Count : 11

Abstract : The mass spectra of several substituted diphenylacetylenes are reported and the (metastable ion)/(daughter ion) ratios for the isomeric chloro- and bromodiphenylacetylenes suggested substituent scrambling in their respective molecular ions. The fragmentation patterns for the amino- and nitrodiphenylacetylenes differed somewhat from most other aromatic amino and nitro compounds. The mass spectra of several deuterated substituted diphenylacetylenes clearly showed extensive (but not complete) H/D equilibration in the molecular ion or some subsequent decomposition ion. (Modified author abstract)

Descriptors :   *Alkynes, *Mass spectra, Amines, Deuterium compounds, Chemical bonds, Halogenated hydrocarbons, Aromatic compounds, Electron irradiation, Fragmentation, Canada

Subject Categories : Organic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE