The Raman spectrum of but-3-enyl methyl ether, CH2CHCH2CH2OCH3 is reported and compared with those of its homologues in which a methyl group is substituted for a hydrogen atom on one of the carbon atoms of the alkenyl chain. Attention is focused on the influence of this methyl group on the bands in the spectrum associated with specific CH, skeletal stretching and bending vibrations. The use of ab initio DFT quantum mechanical ...