Dipole polarizability in π systems in complete configuration interaction
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Abstract
Electron polarizabilities α have been calculated for the π shells in certain conjugated hydrocarbons on the basis of complete configuration interaction. The calculations have been based on the wave-operator method (Teor. Éksp. Khim., 25, No. 1, 1 (1989)). In a polyene series, α increases nonadditively with the chain length, but not as sharply as MO calculations predict. Results are compared for singlet and triplet states in π systems with various types of topology.
Keywords
Hydrocarbon Chain Length Triplet State Configuration Interaction Electron Polarizability
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Literature cited
- 1.N. F. Stepanov and V. I. Pupyshev, “Electronic structures and properties in small molecules,” in: Current Quantum-Chemistry Topics [in Russian], Nauka, Leningrad (1986), pp. 5–77.Google Scholar
- 2.S. Wilson, Electron Correlations in Molecules [Russian translation], Mir, Moscow (1987).Google Scholar
- 3.V. N. Mochalkin, “The π-electron polarizability of a molecule in the multiconfiguration approximation,” Opt. Spektrosk., 30, No. 6, 1019–1021 (1971).Google Scholar
- 4.A. V. Luzanov and Yu. F. Pedash, “Effects from π-electron correlation in the single-particle amplitude spinpairing method,” Teor. Éksp. Khim., 18, No. 1, 8–16 (1982).Google Scholar
- 5.Yu. F. Pedash, V. F. Pedash, and A. V. Luzanov, “A comparison of variational and coupled perturbation theories in semiempirical calculations on molecular polarizabilities,” Zh. Strukt. Khim., 27, No. 1, 164–166 (1986).Google Scholar
- 6.N. N. Tyutyulkov, G. D. Neikov, and I. N. Kynev, “Electron correlation and structure in fulvene in the ground and excited states,” Teor. Éksp. Khim., 13, No. 3, 386–390 (1977).Google Scholar
- 7.A. V. Luzanov, “ A new operator formulation of the multielectron treatment for molecules,” ibid., 25, No. 1, 1–11 (1989).Google Scholar
- 8.N. N. Tyutyulkov and I. N. Kynev, “Influence of the correlation effects upon calculating the electric polarizability in excited states,” C. R. Acad. Bulg. Sci., 26, No. 7, 919–921 (1973).Google Scholar
- 9.V. O. Cheranovskii and Yu. F. Pedash, “Dipole polarizabilities in conjugated molecules in the spin-Hamiltonian method,” Teor. Éksp. Khim., 22, No. 4, 469–472 (1986).Google Scholar
- 10.B. Telman (ed.), Molecular Interactions from Diatomic Molecules to Biopolymers [Russian translation], Mir, Moscow (1981).Google Scholar
- 11.M. M. Mestechkin, The Density-Matrix Method in Molecular Theory [in Russian], Naukova Dumka, Kiev (1977).Google Scholar
- 12.V. N. Mochalkin and E. Ya. Bolycheva, “A theoretical study on π-electron polarizability by the molecule-inmolecule method,” Izv. VUZ, Ser. Fiz., No. 12, 133–135 (1971).Google Scholar
- 13.A. N. Vereshchagin, Molecular Polarizabilities [in Russian], Nauka, Moscow (1980).Google Scholar
- 14.A. V. Luzanov, “Some trends in electronically-excited state quantum chemistry,” Izv. Akad. Nauk SSSR, Ser. Fiz., 47, No. 7, 1322–1327 (1983).Google Scholar
- 15.A. V. Luzanov, Yu. F. Pedash, G. E. Vaiman, and S. I. Smirnov, “Electronic features of triplet levels and spin pairing with reference to 6-radialene,” Zh. Strukt. Khim., 25, No. 5, 12–15 (1984).Google Scholar
- 16.T. K. Rebane, “Calculating conjugated-molecule polarizabilities with allowance for π-electron electrostatic interaction,” Opt. Spektrosk., 8, No. 4, 458–464 (1960).Google Scholar
- 17.A. V. Luzanov, “An excited state as a superposition of singly excited states in the density-matrix formalism,” Teor. Éksp. Khim., 9, No. 6, 723–733 (1973).Google Scholar
- 18.M. M. Mestechkin, G. E. Vaiman, and G. T. Klimko, “Excited states, perturbation theory, and stability in the restricted Hartree-Fock method for unclosed shells,” ibid., 20, No. 3, 257–266 (1984).Google Scholar
- 19.Yu. B. Malykhanov, “Perturbation theory in MO LCAO for open-shell molecules,” Zh. Strukt. Khim., 25, No. 5, 3–11 (1984).Google Scholar
- 20.A. V. Luzanov, “Configuration interaction in a nonorthogonal-determinant basis,” Teor. Éksp. Khim., 22, No. 5, 513–523 (1986).Google Scholar
- 21.A. V. Luzanov and Yu. F. Pedash, “Self-consistency provided by Coopman's theorem in the restricted Hartree-Fock method for open shells,” Zh. Strukt. Khim., 27, No. 4, 10–17 (1986).Google Scholar
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© Plenum Publishing Corporation 1990