Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
STERIC CROWDING IN A HIGHLY POLARIZED [5.6.7]QUINARENE
Kazuko TakahashiToshisada SakaeKahei Takase
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1978 Volume 7 Issue 3 Pages 237-240

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Abstract

Sterically hindered 9,12-dicyano-7,13-dimethyl-10,11-diphenyl [5.6.7]quinarene (2) was spectroscopically investigated in order to clarify the effect of steric crowding on the structure of highly polarized [5.6.7]quinarenes. It has proved that the steric crowding caused a twisting of the molecule around the intercyclic bonds resulting in a further increase of charge separation and a decrease of electronic interaction among the three rings.

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