KENZBHIRAYAMA
382
Vol. 77
[CONTRIBUTION FROM INSTITUTE O F POLYTECHNICS, OSAKA CITY UNIVERSITY]
Absorption Spectra and Chemical Structure. 111. Effects of Substituents and Structure BY K E N ZHIRAYAX% ~ RECEIVEDJULY 16, 1953 In previous studies a quantitative correlation of Amax with n~olecularstructure for the long wave length absorption band of certain polyenes was made. I n this paper the effect of furanoid oxide substituents and of certain spectroscopically effective rings are discussed.
In the preceding paper' i t was stated that the
A,, , for the first absorption band of polyenes and its derivatives can be calculated by
TABLE I RATIOSOF EFFECTS OF SUBSTITCENTS ASD STRUCTURES T O THAT OF ETHYLENE CHROMOPHORE where x
