The Electronic Structure of 1 . 3 - Dipoles : Hypervalent Atoms
نویسندگان
چکیده
Spin-coupled theory is applied to the n electrons of the 1,3-dipoles diazomethane, fulminic acid, and nitrone, and to the inorganic molecules Og, N,O, and NO,. The linear molecules are treated as planar species, in the spirit of 1,3-dipoles taking part in cycloaddition reactions as systems with four n electrons. A very simple, albeit unexpected picture arises for the bonding in these n-electron systems. The central nitrogen atom in CH2N2, for example, takes part in five covalent bonds. We use the label ’hypervalent’ for such a situation, and we identify hypervalent atoms in all of the molecules considered. We discuss the consequences of our model for the chemistry and properties of 1,3-dipoles.
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