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π-π* Molecular charge transfer complexes of antipyrineSchiff bases with 1,4-benzoquinone derivatives as π-acceptors

Charge-transfer-KomplexeSchiffscher Basen vom Antipyrintyp mit 1,4-Benzochinon-Akzeptoren

  • Anorganische Und Physikalische Chemie
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Monatshefte für Chemie / Chemical Monthly Aims and scope Submit manuscript

Summary

Spectrophotometric studies of compounds formed by several substituted antipyrineSchiff bases as electron donors with 2,3-dichloro-5,6-dicyano-benzoquinone, chloranilic acid, and chloranil as electron acceptors have given results that are consistent with 1:1 charge transfer complexes. Transition energies, oscillator strengths, and dipole moments of the complexes as well as the effect of solvent upon their stability are discussed. Also their free energies and absorption cross sections have been determined.

Zusammenfassung

Spektrophotometrische Untersuchungen von ausSchiffschen Basen des Antipyrintyps als Elektronendonatoren und 2,3-Dichlor-5,6-dicyanobenzochinon, Chloranilsäure und Chloranil als Elektronenakzeptoren gebildeten Verbindungen zeigen die Entstehung vonCharge-transfer-Komplexen der Stöchiometrie 1:1. Neben der Berechnung von freien Energien und Absorptionsquerschnitten werden Übergangsenergien, Oszillatorstärken, Dipolmomente und der Einfluß des Lösungsmittels auf die Stabilität der Komplexe diskutiert.

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Authors and Affiliations

  1. Chemistry Department, Faculty of Science, Benha University, Benha, Egypt

    E. H. El-Mossalamy

  2. Chemistry Department, Faculty of Science, Tanta University, Tanta, Egypt

    K. Y. El-Baradie

Authors
  1. E. H. El-Mossalamy
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  2. K. Y. El-Baradie
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El-Mossalamy, E.H., El-Baradie, K.Y. π-π* Molecular charge transfer complexes of antipyrineSchiff bases with 1,4-benzoquinone derivatives as π-acceptors. Monatsh Chem 128, 255–260 (1997). https://doi.org/10.1007/BF00807891

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  • DOI: https://doi.org/10.1007/BF00807891

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