Kamlet-Taft solvent parameters

There are three Kamlet-Taft solvent parameters: α (hydrogen bond donor), β (hydrogen bond acceptor), and π^* (polarizability).
The values of α have been set to 0 for solvents that are assumed to be unable to donate hydrogen bonds. This truncation at 0 is the main reason it differs from other measures of hydrogen bond acidity such as E_T and AN.

Occasionally a "polarity correction term" (fudge factor), δ, is seen in correlations. For aromatics δ=1.0, for polychlorinated compounds δ=0.5, and for all other solvents δ=0.0 . If possible this type of ad hoc parameters should be avoided and separate correlations used for different solvent classes.

α is correlated with →Dimroth-Reichardt E_T (→E_T vs α) and →Gutmann AN (→AN vs α).
β is correlated with →Gutmann DN (→DN vs β) except for amines and sulfides.
π^* is correlated with →Catalán SPP (→SPP vs π^*).

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Name	Formula	α	β	π^*	🏷 Tag
2-chloroethanol	C₂H₅ClO	1.28	0.53	0.46	halo alcohol
N-methylformamide	C₂H₅NO	0.62	0.80	0.90	amide
ethanol	C₂H₆O	0.86	0.75	0.54	alcohol
dimethyl sulfoxide	C₂H₆OS	0.00	0.76	1.00
ethanediol	C₂H₆O₂	0.90	0.52	0.92	alcohol
dimethyl sulfide	C₂H₆S	0.00	0.34	0.57
1,2-diaminoethane	C₂H₈N₂	0.13	1.43	0.47	amine
1,1,1,3,3,3-hexafluoro-2-propanol	C₃H₂F₆O	1.96	0.00	0.65	halo alcohol
1,3-dioxolan-2-one	C₃H₄O₃	0.00	0.41	…	ester
propanenitrile	C₃H₅N	0.00	0.39	0.71	nitrile
dimethylcyanamide	C₃H₆N₂	0.00	0.64	0.72
2-propanone	C₃H₆O	0.08	0.43	0.71	ketone
2-propen-1-ol	⋮	0.84	0.90	0.52	alcohol
1,3-dioxolane	C₃H₆O₂	0.00	0.45	0.69
ethyl formate	⋮	0.00	0.36	0.61	ester
methyl acetate	⋮	0.00	0.42	0.60	ester
propanoic acid	⋮	1.12	0.45	0.58
dimethyl carbonate	C₃H₆O₃	0.00	0.43	…	ester
N,N-dimethylformamide	C₃H₇NO	0.00	0.69	0.88	amide
N-methylacetamide	⋮	0.47	0.80	1.01	amide
2-propanol	C₃H₈O	0.76	0.84	0.48	alcohol
propanol	⋮	0.84	0.90	0.52	alcohol
1,2,3-propanetriol	C₃H₈O₃	1.21	0.51	0.62	alcohol
trimethyl phosphate	C₃H₉O₄P	0.00	0.77	0.72
furan	C₄H₄O	0.00	0.14	…	heteroaromatic