The Raman Effect in Certain Organic Compounds

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Abstract
The Raman spectra of the normal and iso forms of propyl ether, amyl ether, propyl propionate, butyl propionate, amyl propionate, and also methyl propionate have been measured. Certain characteristic frequencies remain unchanged throughout the series but other frequencies which appear singly in the normal forms are split into several frequencies in the iso forms, due to the rearrangement of the atomic groups. The Raman spectra have also been observed in the ortho, meta and para forms of chlorotoluene, cresyl methyl ether, nitrochlorobenzene and nitrotoluene. In addition to the characteristic frequencies which remain unchanged there are certain frequencies which consistently increase from the ortho to meta to para forms. Similar increases are noted in the infrared absorption spectra of the xylenes.

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