Skip to main content
SpringerLink
Log in

Phenolic-iodine Redox Products: Mass Spectrometry, Thermal and Other Physico-chemical Methods of Analyses

  • Published:
Journal of Thermal Analysis and Calorimetry Aims and scope Submit manuscript

Abstract

Three interesting new compounds formed as a result of phenols-iodine redox reactions were investigated by mass spectral fragmentation (MS) and thermal analyses (TA) as well as some other physicochemical methods as microanalysis and infra-red spectroscopy to elucidate their structures. The characterization of the compounds was satisfactorily achieved by using the above analytical tools and their proposed general formulae, were found to be C24H15O8I (PC-IO −3 ), C24H14O12 I2 (PG-IO −3 ) and C12H8O6I2 (PG-IO −4 ).

The fragmentation pathways of PC-IO −3 , PG-IO −3 and PG-IO −4 have been examined using electron ionization (EI) mass spectrometry in comparison with thermal analyses (TG and DTA). Both decomposition modes were investigated, and the fragmentation pathways were suggested. The combined application of mass spectrometry and thermogravimetry (MS and TG) in the analysis of the products allowed the characterization of the fragmentation pathway in MS.

The major pathway in both techniques of PC-IO −3 is due to the loss of CHO followed by CH3I+2H2O. It is due to the loss of 2H2O followed by the loss of 2CH3I for PG-IO −3 . While for PG-IO −3 it is related to the loss of 2H2O followed by loss of 2CH3I molecule stepwise. Different stabilities for initial products and some fragments are discussed.

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

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. M. Mann and M. Wilm, Trends Biochem. Sci., 20 (1995) 219.

    Google Scholar 

  2. R. D. Smith, J. A. Loo, C. G. Edmonds, C. J. Barinaga and H. R. Udseth, Anal. Chem., 62 (1990) 882.

    Google Scholar 

  3. J. L. Kerwin, A. R. Tuininga and L. H. Ericsson, J. Lipid. Res., 35 (1994) 1102.

    Google Scholar 

  4. P. Wheelan, J. A. Zirrolli and R. C. Murphy, J. Am. Soc. Mass Spectrom., 7 (1996) 140.

    Google Scholar 

  5. P. Schneider and M. A. J. Ferguson, Meth. Enzymol., 250 (1995) 614.

    Google Scholar 

  6. V. N. Reinhold, B. R. Reinhold and C. E. Costello., Anal. Chem., 67 (1995) 1772.

    Google Scholar 

  7. E. Kaisersberger and E. Post, Proc. Conf. North. Am. Therm. Anal. Soc., 26th, 1998, p. 548.

  8. For example: a) J. K. Kerwin, Rapid Comm. Mass Spectrom., 11 (1997) 557. b) J. K. Kerwin, J. Mass Spectrom., 31 (1996) 1429.

    Google Scholar 

  9. M. A. Zayed, J. Instrumental Analysis, 11 (1992) 18.

    Google Scholar 

  10. M. A. Zayed, Thermochim. Acta, 111 (1987) 103.

    Google Scholar 

  11. M. A. Zayed, F. A. Nour El-Din and M. M. Ali, Egypt. J. Chem., 84 (1991) 371.

    Google Scholar 

  12. G. G. Mohamed, Ph. D. Thesis, Cairo University 1996.

  13. J. Dannacher, OMS, 19 (1984) 253.

    Google Scholar 

  14. M. A. Fahmey, M. A. Zayed and Y. H. Keshk, Thermochem. Acta, 306 (2001) 183.

    Google Scholar 

  15. K. Levsen, Fundamental Aspect of Organic Mass Spectrometry Verlag Chemie Weinheim, New York 1978, p. 25.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Nuclear Physics Department, N.R.C., Atomic Energy Authority, Cairo, 13759, Egypt

    M. A. Fahmey

  2. Chemistry Department, Faculty of Science, Cairo University, Giza A.R.E., Egypt

    M. A. Zayed

Authors
  1. M. A. Fahmey
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. M. A. Zayed
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to M. A. Zayed.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Fahmey, M.A., Zayed, M.A. Phenolic-iodine Redox Products: Mass Spectrometry, Thermal and Other Physico-chemical Methods of Analyses. Journal of Thermal Analysis and Calorimetry 67, 163–175 (2002). https://doi.org/10.1023/A:1013754417812

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1023/A:1013754417812

Search

Navigation