10. Negative Ions of Organic Molecules

  1. E. C. M. Chen and
  2. E. S. D. Chen

Published Online: 19 APR 2004

DOI: 10.1002/0471659894.ch10

The Electron Capture Detector and the Study of Reactions with Thermal Electrons

The Electron Capture Detector and the Study of Reactions with Thermal Electrons

How to Cite

Chen, E. C. M. and Chen, E. S. D. (2004) Negative Ions of Organic Molecules, in The Electron Capture Detector and the Study of Reactions with Thermal Electrons, John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/0471659894.ch10

Publication History

  1. Published Online: 19 APR 2004
  2. Published Print: 16 APR 2004

ISBN Information

Print ISBN: 9780471326229

Online ISBN: 9780471659891

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Keywords:

  • aromatic hydrocarbon anions;
  • multiple anion states;
  • anion potential energy curves nitrobenzene nitromethane;
  • theoretical electron affinities;
  • anion substitution effects;
  • evaluations;
  • chloronitrobenzene

Summary

The negative ions of organic molecules are more difficult to characterize because of the many degrees of freedom that they have. Organic molecules are defined as closed shell species that contain C, H, O, S, N and halogens. The profusion of vibrations and rotations also leads to multiple negative ion states. In this chapter, the negative ion states of nitromethane and nitrobenzene will be characterized by Morse potential energy curves. The electron affinities of the organic molecules will be evaluated by comparisons with experimental and theoretical determinations. Based on these data, substitution effects for CH3C[DOUBLE BOND]O, NO2, HC[DOUBLE BOND]O, NH2, F, Cl, CF3 and alkyl groups are determined. Multiple substitution effects for NO2 and CN on benzene and ethylene are established.