title: Is Al2Cl6 aromatic? Cautions in superficial NICS interpretation.
abstract: In this article, we employed the induced magnetic field method to show that the Al2X6 (X = F, Cl, Br, I) clusters cannot be classified as aromatic systems. Interestingly, even nucleus independent chemical shift (NICS) reveals the same conclusion when analyzed in greater detail, showing that a superficial analysis of this index can easily lead to incorrect interpretations. In view of the fact that the NICS index is extensively used by computational and theoretically oriented experimental chemists, this is an important warning against superficial analyses, as it can lead to erroneous chemical interpretation.
authors.affiliation: Departamento de Química, Facultad de Ciencias Exactas, Universidad Andres Bello , Av. República 252, Santiago, Chile.
authors.forename: Juan José
authors.initials: JJ
authors.lastname: Torres
authors.forename: Rafael
authors.initials: R
authors.lastname: Islas
authors.forename: Edison
authors.initials: E
authors.lastname: Osorio
authors.forename: Jason G
authors.initials: JG
authors.lastname: Harrison
authors.forename: William
authors.initials: W
authors.lastname: Tiznado
authors.forename: Gabriel
authors.initials: G
authors.lastname: Merino