Vibrational frequency shifts of free to complexed PF3: Tetrakis(trifluorophosphine)-nickel

The vibrational frequencies of Ni(PF₃)₄ are studied. Frequency shifts from free to complexed PF₃ are calculated on the basis of kinematic coupling. The results are compared with experimental data from literature. Many of the general trends in the observed frequency shifts are found to be in qualitative agreement with the theory, but several quantitative discrepancies remain.