prediction of substituent effects
Recently Published Documents


TOTAL DOCUMENTS

4
(FIVE YEARS 0)

H-INDEX

4
(FIVE YEARS 0)

1975 ◽  
Vol 53 (6) ◽  
pp. 945-951 ◽  
Author(s):  
Jerzy Kruszewski ◽  
Tadeusz Marek Krygowski

A general rule of aromatic stability of non-alternant polycyclic conjugated hydrocarbons has been detailed and using aromatic stability indices, corroborated. The π-electron system is said to be relatively more stable if the difference between number of 4N + 3-type rings minus number of 4N + 1-type rings is 0 or divisible by 4. If not, the system is assumed to be relatively unstable. The presence of benzene rings does not affect the rule. A further extension for intramolecular H-bonded systems is also suggested. The rule suggested permits prediction of substituent effects on stability as well as the ionic form being most stable if the rule is not fulfilled.



Sign in / Sign up

Export Citation Format

Share Document