| 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. |
