Z. Slanina et al., A CLASSIFICATION OF 200 ISOMERIZATIONS AMONG 51 ISOTOPOMERS OF C-8 (D2D), Journal of radioanalytical and nuclear chemistry, 170(2), 1993, pp. 373-380
The set of all 51 possible C-12/C-13 isotopomers of a C-8 cluster of D
2d symmetry has been studied by means of the harmonic vibration analys
is based on the force field resulting from the second order Moller-Ple
sset (MP2) perturbation treatment with the 6-31G basis set. The isoto
pomers can undergo 200 isomerizations which can be classified into 5 d
istinct groups using the properties of sums of the squares of harmonic
vibrational frequencies.