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Five‐Membered Aromatic and Antiaromatic Rings with Gallium, Germanium, and Bismuth Centers: A Short March through the Periodic Table
Author(s) -
Grützmacher Hansjörg
Publication year - 1995
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199502951
Subject(s) - aromaticity , antiaromaticity , planarity testing , bismuth , computational chemistry , chemistry , germanium , ab initio , crystallography , periodic table , molecule , silicon , organic chemistry
Criteria for aromaticity–a topic with staying power! Planarity of the rings, bonds of equal length, stabilization energies, and the number of π electrons were considered among the characteristics of the important phenomenon of aromaticity, but no one of these features is generally valid. Schleyer et al. (p. 334 in this issue) have now correlated the criteria with ab initio IGLO calculations on five‐membered heterocycles. In addition this highlight collates the synthesis methods and the chemical properties of these interesting compounds.