
pmid: 15162209
handle: 10261/34914
Geometrical and energetic DFT calculations as well as GIAO and NICS chemical shifts have been calculated for 1H-azepine and 5H-dibenz[b, f]azepine and their cations. The last compound has been studied experimentally by 1H and 13C NMR in neutral and acidic conditions establishing that the cation corresponds to an N-protonated structure. The conclusion is that the neutral molecules are antiaromatic while the cations are aromatic (homoheteroaromaticity).
Financial support was provided by the Spanish DGICYT (Project nos. SAF2003-08003-C02-02 and BQU-2000-0906). C. D. is a recipient of a postdoctoral fellowship from the Spanish Ministerio de Educación, Cultura y Deporte (SB2001-0174).
Peer reviewed
1H-azepine, 5H-dibenz[b, f]azepine
1H-azepine, 5H-dibenz[b, f]azepine
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