Nonbonded interactions. The influence of lone pair repulsions on bond lengths

@inproceedings{Palenik1990NonbondedIT,
  title={Nonbonded interactions. The influence of lone pair repulsions on bond lengths},
  author={Gus J. Palenik and Anna Eugenia Kozioł and Alan R. Katritzky and Wei-Qiang Fan},
  year={1990}
}
Nonbonded lone-pair repulsions are postulated as the cause of bond lengthening in isatin and a variety of other small molecules.