Nucleus-Independent Chemical Shifts: A Simple and Efficient Aromaticity Probe
作者： Paul von Ragué Schleyer , Christoph Maerker , Alk Dransfeld , Haijun Jiao , Nicolaas JR van Eikema Hommes
DOI: 10.1021/JA960582D
关键词:
摘要: The ability to sustain a diatropic ring current is the defining characteristic of aromatic species. 1-7 Cyclic electron delocalization results in enhanced stability, bond length equalization, and special magnetic as well as chemical and physical properties. 1 In contrast, antiaromatic compounds sustain paratropic ring currents3 despite their localized, destabilized structures. 1-7 We have demonstrated the direct, quantitative relationships among energetic, geometrical, and magnetic criteria of aromaticity in a wide-ranging set of …
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