Aromaticity;
Antiaromaticity;
Huckel 4n+2 rule;
Topology of MO nodes;
POLYENES;
D O I:
10.1007/s00214-008-0504-x
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:
The "4n + 2 rule" is derived analytically at the level of the simple Huckel theory for neutral even-membered chains, their double ions, as well as cations and anions of the odd-membered chains, by determining the first order energetic effect of the ring closure. The topological background of the "4n + 2 rule" is also briefly discussed.