The application of resolution enhancement techniques to the study of factors affecting group frequencies - I. Coupling of symmetric methyl deformation frequencies in o-xylene

Article abstract of DOI:10.1016/0584-8539(85)80115-X

Deconvolution of methyl symmetric deformation frequencies of o-, m- and p-xylene yields a fully resolved doublet with 10 cm^-1 spacing in o-xylene, but singlets in m- and p-xylene.Resolution enhancement of the methyl bending mode of 1-methyl-2--benzene yields a single band near 1380 cm^-1.The relative intensity of the heavy to light band systems is <*> 0.4.The data indicate that spatial coupling exists between the symmetric methyl deformation modes of o-xylene.