Theoretical study of cyclazines
- 1 January 1969
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc. A
- p. 1754-1755
- https://doi.org/10.1039/j19690001754
Abstract
Calculations are reported for cycl[3,3,3]azine (I), the perinaphthenium anion(II), and cycl[3,2,2]azine (III), using a recently developed semiempirical SCF MO method. These indicate that (I) should be antiaromatic, with alternating bond lengths, unlike (II) or (III), and that it should have a low ionization-potential. The calculated charge-densities for (I) and (II) account well for the proton n.m.r. spectrum. A simple PMO treatment of (I) also indicates that it should be antiaromatic.Keywords
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