Proton Transfer Equilibria and Critical Behavior of H-Bonding

Figure 14

Comparison of the Δ𝐻^∘_PT with 𝐸_𝑇 parameters for Mannich bases: (A) 2-(N,N-dimethylaminomethyl)-4,6-dibromophenol, (B) 2-(N,N-diethylaminomethyl)-4-nitro-phenol, (C) 2-(N,N-diethylaminomethyl)-3,4,6-trichlorophenol, (D) 2-(N,N-diethylaminomethyl)-3,4,5,6-tetrachlorophenol, (E) 2-(N,N-diethylaminomethyl)-4-nitronaphthol-1, in 1,2-dichloroethane (1), dichloromethane (2), n-butylchloride (3), chloroform (4), 1,4-dioxane (5), isopropylbenzene (6) squalane (7), methanol (8), ethanol (9), butan-1-ol (10), propan-1-ol (11), acetonitrile (12), and N,N-dimethylformamide (13) [36].