Abstract
The ring current model allows the characterization of the in-plane aromaticity present in the transition structures of several pericyclic reactions. The differences between in-plane and pi aromaticity can be readily characterized by means of this model. In the presence of a magnetic field, in-plane aromaticity is manifested by a ring current moving along the molecular plane, thus yielding a maximum diamagnetic shielding at the ring point of the electron density. This shielding decays monotonically above and below the molecular plane. In contrast, pi aromaticity can be characterized by two ring currents moving at a certain distance above and below the molecular plane. This distance corresponds to the covalent radius of the atoms involved. Therefore, the diamagnetic shielding is not maximum at the ring point of the electron density.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
