Harmonic vibrational frequencies of a representative series of X-phenols (X=F, Cl, Br) in ortho, meta and para positions are determined using density functional theory (B3LYP) in conjunction with 6-311++G(d,p), 6-311++G(2d,2p), and 6-311++G(2df,2p) basis sets. Their complete and clear-cut vibrational assignment based on the concept of the potential energy distribution is carried out. Such assignment allows to resolve a number of uncertainties appeared in the previous studies and to propose a new explanation of frequency alterations of particular vibrational modes in this series.
|Original language||English (US)|
|Number of pages||19|
|Journal||Spectrochimica Acta - Part A Molecular and Biomolecular Spectroscopy|
|State||Published - Jul 1 2002|
- Potential energy distribution
- Vibrational analysis