The mass spectra and correlations with structure for some 1-(5-ethyl-2-thienyl)-1-thiaalkanes

The mass spectra of fifteen members of the 1-(5-ethyl-2-thienyl)-1-thiaalkanes have been obtained. Fragmentation paths, rearrangement mechanisms supported by low ionization voltage data have been discussed. The parent peaks are moderately strong. The rearrangement ion at m/e 144 is prominent for all spectra of the compounds. A large amount of hydrocarbon fragment ions and only a small amount of typical alkylsulfide ions are observed. Short chain compounds do not follow the correlations developed. Suggestions for further studies of synthesis with positions of deuterium atom and carbon-13 on molecules have been made.