I. Kanev et al., CALCULATIONS OF STATIC POLARIZABILITIES O F EVEN POLYENES IN EXCITED ELECTRONIC STATES, Comptes rendus de l'Academie des sciences. Serie 2, Mecanique, physique, chimie, sciences de l'univers, sciences de la terre, 318(3), 1994, pp. 305-310
The electronic polarizability of even polyenes containing from 10 to 4
0 carbon atoms was evaluated, by means of the SOS procedure within the
PPP-SDCI approximation, for the ground and first excited singlet and
triplet states. It was shown that, in a range of chain length dependin
g on the degree of alternance of the bonds, the variation of polarizab
ility for the first two pipi excited singlets displays opposite extre
ma, induced by electron correlation and polyene relaxation effects.