Croatica Chemica Acta, Vol. 49 No. 1, 1977.
Original scientific paper
On the Aromatic Stability of Positional Isomers Consisting of Bicyclic Systems Composed Entirely of Five-Membered Heterocycles
M. Milun
; Ruder Boskovic Institute, p .O.B. 1016, 41000 Zagreb, Croatia, Yugoslavia
N. Trinajstić
; Ruder Boskovic Institute, p .O.B. 1016, 41000 Zagreb, Croatia, Yugoslavia
Abstract
Isomeric bicyclic conjugated systems consisting entirely of
five-membered heterocycles were studied using a novel aromaticity
index named topological resonance energy (TRE). TRE has correctly
predicted the aromatic behaviour of all the groups of isomers
studied. (These isomers called positional isomers because they
formally differ only by the position of a-bivalent heteroatoms)
may be classified into a particular group according their annelation
mode, which closely parallels TRE predictions and experimental
findings.
Keywords
Hrčak ID:
196421
URI
Publication date:
25.3.1977.
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