Disjoint nonclassical hydrocarbons have very unstable lowest-lying singlet states: a PM3 study

Earlier workers have suggested that disjoint hydrocarbons have nearly-degenerate lowest-lying singlet and triplet states while non-disjoint (or joint) hydrocarbons should be ground-state triplets. PM3 results for an appropriate selection of alternant hydrocarbons are inconsistent with that generaliz...

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Bibliographic Details
Main Author: Richard Francis Langler
Format: Article
Language:English
Published: Sociedade Brasileira de Química 2001-12-01
Series:Química Nova
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422001000600002