Dications of fluorenylidenes. Contribution of magnetic and structural effects to the antiaromaticity of fluorenylidene dications with cyclic substituents.

@article{Mills2002DicationsOF,
  title={Dications of fluorenylidenes. Contribution of magnetic and structural effects to the antiaromaticity of fluorenylidene dications with cyclic substituents.},
  author={Nancy S. Mills},
  journal={The Journal of organic chemistry},
  year={2002},
  volume={67 20},
  pages={7029-36}
}
The antiaromaticity of fluorenylidene dications 1-5, which contain cyclic cationic substituents, has been examined using magnetic criteria, NICS and magnetic susceptibility, and by structural criteria, HOMA. The magnetic criteria, including proton chemical shifts, strongly support the antiaromaticity of the fluorenyl ring system of these dications. HOMA… CONTINUE READING

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