Effect of Chance of Solvents on the Protonation Constant and Other Characteristics of 2,2′-Bipyridine and 1,10-Phenanthroline

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Based on pH measurements, protonation constant of 2,2'-Bipyridine and 1,10- Phenathroline have been evaluated in aqueous and aqua-organic media at different temperatures and ionic strengths employing Albert-Serjeant and Irving-Rossotti methods. The effect* of solvents on the protonation constant are discussed and explained in the light of change of H-bonding change of dielectric constant of water and proton solvation of the organic solvent. Thermodynamic parameters have also been determined.

Chance; Protonation; Characteristics