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Cyclic Conjugation in Porphin

Ivan Gutman ; Max-PLanck-Institut fur Strahlenchemie, Millheim, F. R. Germany


Puni tekst: engleski pdf 4.144 Kb

str. 359-369

preuzimanja: 290

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Sažetak

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.

Ključne riječi

Hrčak ID:

178021

URI

https://hrcak.srce.hr/178021

Datum izdavanja:

6.3.1986.

Posjeta: 601 *