Resonance topology and related aspects of fluoranthenoid/fluorenoid and indacenoid hydrocarbon radicals

被引：5

作者：

Cash, GG

Dias, JR

机构：

[1] US EPA, Risk Assessment Div 7403M, Off Pollut Prevent & Tox, Washington, DC 20460 USA

[2] Univ Missouri, Dept Chem, Kansas City, MO 64110 USA

来源：

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES | 2002年 / 57卷 / 08期

关键词：

resonance topology; hydrocarbon radicals; structure count;

D O I：

10.1515/zna-2002-0803

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：

Data oil the number of resonance structures of free radical polycyclic conjugated hydrocarbons are tabulated and studied. The first examples of fluoranthenoid / fluorenoid and indacenoid polyradical systems are presented. Some comparative generalizations between benzenoid free radicals and fluoranthenoid / fluorenoid and indacenoid polyradical systems are formulated. For example, there is a tendency of these latter even-carbon nonalternant hydrocarbons to have fewer radical isomers compared to the former alternant hydracarbons. Examples where Fowler's leapfrog algorithm identifies the more stable fluorenoid anion and indacenoid dianion isomer are presented.

引用

页码：650 / 660

页数：11

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