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The location of olefinic bonds in mono‐ and di‐unsaturated compounds
Author(s) -
Greathead Roger J.,
Jennings Keith R.
Publication year - 1980
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210150808
Subject(s) - chemistry , double bond , molecule , ether , reagent , carbon fibers , polymer chemistry , nitrogen , vinyl ether , chemical ionization , organic chemistry , ion , photochemistry , ionization , materials science , composite number , copolymer , composite material , polymer
Abstract The use of vinyl methyl ether as a chemical ionization reagent gas for the location of olefinic bonds is limited by reactions of various ion with vinyl methyl ether molecules. A 75: 20: 5 mixture of nitrogen/carbon disulphide/vinyl methyl ether suggested by Harrison and Chai gives much cleaner spectra and has been used to study octenes and octadienes. Evidence is presented to indicate the formation of two reaction complexes with octenes and four reaction complexes with unconjugated octadienes. Elimination of olefins from these complexes allows one to infer the positions of the carbon‐carbon double bonds in each type of molecule.