Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

On the reliability of equilibrium data of the charge-transfer complex between 2,3-dichloro-1,4-naphthoquinone and hexamethylbenzene

  • 25 Accesses

  • 1 Citations

Abstract

In view ofHammond's warning6 about the “Conspiracy of errors”, found in the case of low values of equilibrium constants of charge-transfer complexes a case is made out for redetermining the values for the system hexamethylbenzene—2,3-dichloro-1,4-naphthoquinone. Uncertainties in the parameters were estimated using theLiptay 8 matrix procedure. The solvent used was dichloromethane. The following data were obtained at 25°C: vC T = 22,220 cm−1;E A=0.99 eV;K ɛ=2599±57 l2·cm−1·mol−2. ɛmax= 1020 ± 148 cm−1··1;K=2.55±0.37 l·mol−1; −ΔH=2.7±0.3 kcal·mol−1.

This is a preview of subscription content, log in to check access.

References

  1. 1

    N. Akira andH. Akamatu, Bull. Chem. Soc. Japan41, 1961 (1968).

  2. 2

    S. Chatterjee, J. Chem. Soc.B 1971, 2194.

  3. 3

    R. Foster, D. Ll. Hammick, andP. J. Placito, J. Chem. Soc.1956, 3881.

  4. 4

    M. E. Peover, J. Chem. Soc.1962, 4540.

  5. 5

    R. Foster andI. B. C. Matheson, Spectrochim. Acta23 A, 2037 (1967).

  6. 6

    P. R. Hammond, J. Chem. Soc.1964, 479.

  7. 7

    R. Foster, Organic Charge-transfer complexes. New York: Academic Press. 1969.

  8. 8

    W. Liptay, Z. Elektrochem.65, 375 (1961).

  9. 9

    R. S. Mulliken andW. B. Person, Molecular Complexes. New York: Wiley-Interscience. 1969.

  10. 10

    M. Batley andL. E. Lyons, Nature196, 573 (1962).

  11. 11

    G. Saito andY. Matsunaga, Bull. Chem. Soc. Japan44, 1788 (1971).

  12. 12

    G. Briegleb, Elektronen-Donator—Acceptor-Komplexe, p. 208. Berlin-Göttingen-Heidelberg: Springer. 1961.

Download references

Author information

Correspondence to Prof. Dr. N. R. Subbaratnam.

Additional information

With 1 Figure

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Karthikeyan, G., Subbaratnam, N.R. On the reliability of equilibrium data of the charge-transfer complex between 2,3-dichloro-1,4-naphthoquinone and hexamethylbenzene. Monatshefte für Chemie 108, 1055–1058 (1977). https://doi.org/10.1007/BF00897686

Download citation

Keywords

  • Physical Chemistry
  • Analytical Chemistry
  • Inorganic Chemistry
  • Organic Chemistry
  • Dichloromethane