The Raman spectra of 4fluoroanisole, 2,3,5,6-tetrafluoro-, pentafluoro-, 2,3,6-trichloro-, 2,3,4trichloro-and 3 , s dichloro-anisole were recorded in the region 4000-10 cm-' and their infrared spectra as mulls were measured in the range 4000-200 cm-'. The Fourier transform far-infrared spectra of the same samples in the region 600-20 cm-' were also obtained. A normal coordinate analysis was made for the in-plane vibrations of these molecules using a 50-parameter modified valence force field. The force constants were refined using an overlay least-squares technique. Unambiguous vibrational assignments were made using the potential energy distributions and eigenvectors.

A zeroorder vibrational analysis of the in-plane vibrations is made fop m-fluoro-, o-chloro-, p-chloro-, o-bromoand p-bromo-anisole, transferring the force constants from Part I. The observed and calculated frequencies agree with an average error of 13 em-', demonstrating the transferability of the force field obtained in Part I. On the basis of the calculated potential energy distributions and eigenvectors, several assignments suggested by earlier workers have been revised.