Jb. Castro et al., POTENTIAL CONSTANTS AND CORIOLIS COUPLING-CONSTANTS OF PERHALOGENATEDETHYLENES .3. TRANS-CLFC=CFCL, TRANS-CLBRC=CBRCL AND TRANS-FBRC=CBRF, Journal of molecular structure. Theochem, 330, 1995, pp. 255-259
Based on vibrational frequencies a calculation of a general quadratic
force field has been carried out for trans-CIFC=CFCl, trans-ClBrC=CBrC
l and trans-FBrC=CBrF via an iterative method. The resulting transform
ation L matrices were used to evaluate the Coriolis coupling constants
and these were used to calculate inertial defects. The calculated val
ues of the inertial defects are lower than those of the respective cis
-ethylene-type molecules.