TY - JOUR
T1 - Electric field simulation of substituents in donor - Acceptor polyenes
T2 - A comparison with ab initio predictions for dipole moments, polarizabilities, and hyperpolarizabilities
AU - Kirtman, Bernard
AU - Champagne, Benoît
AU - Bishop, David M.
PY - 2000/8/23
Y1 - 2000/8/23
N2 - The treatment of dipole moments (μ), polarizabilities (α), and hyperpolarizabilities (β, γ) in push - pull systems using electric field simulation for the substituents is reanalyzed and tested by comparison with ab initio Hartree - Fock calculations on representative donor - acceptor (D/A) polyenes. Both vibrational and electronic contributions are properly taken into account. We find that the field simulation approach can be applied semiquantitatively to relate the odd-order (μ, β) properties only. Even for these properties, however, features such as the chain-length dependence cannot be reproduced due to the excessively delocalized description of the D/A substituents.
AB - The treatment of dipole moments (μ), polarizabilities (α), and hyperpolarizabilities (β, γ) in push - pull systems using electric field simulation for the substituents is reanalyzed and tested by comparison with ab initio Hartree - Fock calculations on representative donor - acceptor (D/A) polyenes. Both vibrational and electronic contributions are properly taken into account. We find that the field simulation approach can be applied semiquantitatively to relate the odd-order (μ, β) properties only. Even for these properties, however, features such as the chain-length dependence cannot be reproduced due to the excessively delocalized description of the D/A substituents.
UR - http://www.scopus.com/inward/record.url?scp=0034706044&partnerID=8YFLogxK
U2 - 10.1021/ja993226e
DO - 10.1021/ja993226e
M3 - Article
AN - SCOPUS:0034706044
SN - 0002-7863
VL - 122
SP - 8007
EP - 8012
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 33
ER -