Croatica Chemica Acta, Vol. 58 No. 4, 1985.
Original scientific paper
Cyclic Conjugation in Porphin
Ivan Gutman
; Max-PLanck-Institut fur Strahlenchemie, Millheim, F. R. Germany
Abstract
The paper consists of three parts. In Part A the cyclic conjugation in porphin and some related compounds is examined. It is shown that the Huckel (4m+2)-rule isviolated so that conjugation along both 16-, 17-, 18-, 19- and 20- membered cycles causes stabilization of the rc-electron system of porphin. In Part B some comments on the topological resonance energy method and its application to porphin are given In Part e the four existing methods for the calculation of the effect of cyclic conjugation on the stability of ot-electron systems are compared and their mutual relationship revealed.
Keywords
Hrčak ID:
178021
URI
Publication date:
6.3.1986.
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