- 作者: 陳成
- 作者服務機構: Contribution from the Department of Chemistry, Chung-Cheng Institute of Technology, Ta-Shi, Taiwan, China
- 中文摘要: A simple correlation between the MO bond orders and the resonance structures of a π system is proposed. Para conjugation is a resonance structure with parallel arrangement of alternating attractive and repulsive bonds. The results in C5H5¯, C5H5 and C7H7+ clearly show that the para conjugation is very important comparing with the ordinary ring conjugation. The aromatic substitution reactions strongly demomstrates the effect of para conjugation in benzene, naphthalene and anthrance.
- 英文摘要: --
- 中文關鍵字: --
- 英文關鍵字: --