The electronic structure of 1,3-dipoles: hypervalent atoms

@article{Cooper1989TheES,
  title={The electronic structure of 1,3-dipoles: hypervalent atoms},
  author={David L. Cooper and J. Garrett and Mario Raimondi},
  journal={Journal of The Chemical Society-perkin Transactions 1},
  year={1989},
  pages={1187-1197}
}
Spin–coupled theory is applied to the π electrons of the 1,3-dipoles diazomethane, fulminic acid, and nitrone, and to the inorganic molecules O3, N2O, and NO2. The linear molecules are treated as planar species, in the spirit of 1,3-dipoles taking part in cycloaddition reactions as systems with four π electrons. A very simple, albeit unexpected picture arises for the bonding in these π-electron systems. The central nitrogen atom in CH2N2, for example, takes part in five covalent bonds. We use… 
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