The force field and molecular constants of NF 3

Abstract

General valence force field constants for NF₃ have been calculated using very accurate frequency data, Coriolis coupling constants (ζ) and centrifugal distortion constants. The calculated constants are in excellent agreement with the experimental ones. Mean amplitudes of vibration were also calculated by some different methods, and thermodynamic functions are given for the temperature range 200 to 2000°k. Earlier investigations of these molecular constants are less accurate or incorrect.