Huckel-like rule of superaromaticity for charged paracyclophanes

被引:20
作者
Aihara, J [1 ]
机构
[1] Shizuoka Univ, Fac Sci, Dept Chem, Ohya, Shizuoka 4228529, Japan
关键词
D O I
10.1016/j.cplett.2003.09.114
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Paracyclophanes, in which four or more benzene units are linked at the 1,4-positions by ethylene bridges, show annulene characteristics upon charging. It was proved that a Huckel-like rule of superaromaticity holds for molecular ions of these species. Here superaromaticity represents energetic stabilization due to cyclic motion of pi-electrons along the macrocycle. If this type of paracyclophane molecule or any of its closed-shell molecular ions is super-antiaromatic, it will probably become superaromatic either by acquiring two more pi-electrons or by losing two pi-electrons. (C) 2003 Elsevier B.V. All rights reserved.
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页码:147 / 153
页数:7
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