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C. S. Sharov, V. M. Ivanov
States
of 3-(2-Thiazolylazo)-2,6-diaminopyridine in Solvents with Associated
Structure. The Hydrogen Bond Effect
Abstract
Aminoazoidic / iminohydrazonic
forms of 3-(2-thiazolylazo)-2,6-diaminopyridine (TADAP) equilibrium is
investigated in 15 solvents with the structure ordered either by hydrogen bond
association or by free electron pairs interaction effects. TADAP tautomeric
forms molar concentrations are calculated in different solvents as well as the
forms equilibrium constants. The reagent molecules involving into the ordered
liquid structure is found to be in associated solvents, the dimers formation
being assumed to be formed in low dielectric permeability environments.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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