Vibrational perturbation: A chemical aid to assignment. I—Fermi resonance in the ν8 region of isotopic pyridines

Journal of Raman Spectroscopy - Tập 8 Số 3 - Trang 180-184 - 1979
Howard D. Stidham1, D. P. DiLella1
1Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003 USA

Tóm tắt

AbstractComplete Raman data are reported for the ν1, ν6 and ν8 regions of the vibrational spectra of the C deuterium‐labeled pyridines and of their water complexes. Raman data are given for frequency shifts observed when some of these pyridines are dissolved in a selection of hydrogen‐bonding solvents. The complicated ν8 region is afforded definitive assignment based on Fermi resonance between the A1 component of ν8 and the A1 combination tone ν1 + ν6a, as well as on the ways in which these resonances are made or broken when hydrogen‐bonded complexes are formed with the deuterium‐labeled pyridines.

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