VALENCE BOND THEORY OF ORGANIC CHARGE-TRANSFER SALTS.

Z. G. Soos, S. Mazumdar, T. T.P. Cheung

Research output: Contribution to conferencePaper

9 Scopus citations

Abstract

A valence bond (VB) description is introduced for organic charge-transfer (CT) salts based on mixed stacks . . . D** plus **yA** minus **yD** plus **yA** minus **y . . . of donors (D) and acceptors (A). Extrapolating exact results for finite rings shows that the magnetic gap DELTA E//m is finite for gamma less than gamma //c equals 0. 68 plus or minus 0. 01 and vanishes for gamma greater than gamma //c as expected in the paramagnetic ionic limit gamma equals 1. The small finite DELTA E//m in the ″ionic″ TMPD-TCNQ complex indicates incomplete CT, in agreement with the resonant Raman result of gamma similar 0. 7. The extension of diagrammatic VB techniques to partly-filled segregated ion-radical stacks like . . . A** minus **yA** minus **yA** minus **yA** minus **y or D** plus **yD** plus **yD** plus **yD** plus **y . . . is discussed.

Original languageEnglish (US)
Pages93-102
Number of pages10
StatePublished - 1978
Externally publishedYes
EventProc of the Int Symp on Org Solid State Chem, 5th, pt B - Brandeis Univ, Waltham, Mass
Duration: Jun 13 1978Jun 16 1978

Other

OtherProc of the Int Symp on Org Solid State Chem, 5th, pt B
CityBrandeis Univ, Waltham, Mass
Period6/13/786/16/78

ASJC Scopus subject areas

  • Engineering(all)

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    Soos, Z. G., Mazumdar, S., & Cheung, T. T. P. (1978). VALENCE BOND THEORY OF ORGANIC CHARGE-TRANSFER SALTS.. 93-102. Paper presented at Proc of the Int Symp on Org Solid State Chem, 5th, pt B, Brandeis Univ, Waltham, Mass, .