ISSN:
0020-7608

Keywords:
Computational Chemistry and Molecular Modeling
;
Atomic, Molecular and Optical Physics

Source:
Wiley InterScience Backfile Collection 1832-2000

Topics:
Chemistry and Pharmacology

Notes:
Within the framework of the AMO-EHF approximation for the Hubbard model, it is shown that the band gap ΔE of an arbitrary regular alternant 1D π-system (polymer), having a singlet ground state, is different from zero, i.e., the ground state is a dielectric one. At least one of the three components of the energy gap - the topological, Δtop; the geometrical, Δgeom; or the correlation, Δcorr (combined via the equation ΔE = {Δcorr2 + (Δtop + Δgeom))2}1/2 - is different from zero. Numerical results for several 1D alternant polymers with conjugated π-systems are given. © 1994 John Wiley & Sons, Inc.

Additional Material:
1 Ill.

Type of Medium:
Electronic Resource

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