Superaromaticity

In theoretical chemistry, superaromaticity describes the potential for extra thermodynamic stability and unique magnetic properties arising from π-electron delocalization around a large "super-ring" composed of a cyclic array of smaller aromatic rings. The concept is distinct from the common global aromaticity observed in single-ring macrocycles like annulenes.

The question of whether superaromaticity is a real, significant phenomenon has been the subject of a long-standing scientific debate, primarily centered on the molecule kekulene (C
48H
24). While initial computational studies suggested kekulene possessed this additional stability, subsequent analysis using more advanced methods has led to a scientific consensus that it is a normal benzenoid hydrocarbon with no appreciable superaromatic character.

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