M. Kuanar et Bk. Mishra, APPLICABILITY OF WILLIAMS-NORRINGTON MODEL FOR QUANTITATIVE STRUCTURESPECTRA RELATIONSHIP, Indian journal of chemistry. Sect. A: Inorganic, physical, theoretical & analytical, 34(9), 1995, pp. 721-723
Williams-Norrington equation has been utilised to correlate the absorp
tion speatra with the substituent parameters in 5-arylidene 1,3-diphen
yl 2-thiobarbituric acids. The regression model with three substituent
parameters reveals a significant participation of steric parameter in
the quantitative structure spectra relationship.