American Chemical Society
Browse (18.18 MB)

Norcorrole: Aromaticity and Antiaromaticity in Contest

Download (18.18 MB)
posted on 2020-10-26, 18:03 authored by Peter B. Karadakov
Magnetic shielding studies demonstrate that nickel norcorrole (NiNc) and norcorrole (H2Nc) provide unusual examples of stable molecules with high antagonistic levels of antiaromaticity and aromaticity: Both incorporate an antiaromatic “core”, a 14-membered cyclic conjugated subsystem with 16 π electrons, surrounded by an aromatic “halo” in the form of a ring of either 14 atoms and 14 π electrons with a new type of homoconjugation (NiNc), or 18 atoms with 18 π electrons (H2Nc).