1 2 3 The Effect of Structure upon the Reactions of Organic Compounds. Benzene Derivatives Louis P. Hammett J. Am. Chem. Soc.; 1937; 59(1); 96-103 Abstract
↑ Table values are this original 1937 publication, and differ from values appearing in subsequent publications. For more standard vales, see: C. Hansch; A. Leo; R. W. Taft (1991). “A survey of Hammett substituent constants and resonance and field parameters”. Chem. Rev.91 (2): 165–195. doi:10.1021/cr00002a004.
↑ Some Relations between Reaction Rates and Equilibrium Constants. Louis P. Hammett Chem. Rev.; 1935; 17(1); 125-136 Abstract
↑ Advanced Organic Chemistry Part A Second Edition F.A. Carey, R.J. Sundberg Plenum Press ISBN 0-306-41198-9
↑ The opening line in his 1935 publication reads: The idea that there is some sort of relationship between the rate of a reaction and the equilibrium constant is one of the most persistently held and at the same time most emphatically denied concepts in chemical theory
↑ These values are the original values obtained by Hammett in his1937 publication and may differ from subsequent publications by others. The following review contains more commonly accepted substituent constants: C. Hansch, A. Leo and R. W. Taft Chem. Rev.; 1991; 91; 165-195 Abstract
↑ M. Bols, X. Liang, H. H. Jensen "Equatorial contra axial polar substituents. The Relation of a Chemical Reaction to Stereochemical Substituent Constants." J. Org. Chem. 2002; 67; 8970-74. Abstract
