Astudy of solvent effect on protonation constant of pyridine carbaldehyde in Different Aqueous Solutions of Methanol

Leor (۲۰۰۱) studied the effect of solvent, structure, and temperature on ionization balance constant in Phenols and Pyridiniom ions of mixture of water and ۱-۴ Dioxan (۰-۷۰%) with weight loss of dioxin in ۱۰-۵۰ temperature changes and observed that the effect of structure and temperature demonstrates the possibility of using Hamtz equation and the model of Marshal Quist in all temperatures and this equation allows the investigation and analysis of the three effects in order to develop pk [۱]. W.Y.Ma et al. (۲۰۰) computed the effect of different solvents using theoretical approach and obtained the ۴ kinds of balances in gaseous phase and they studied the effect of solvent polarity on the recent balances and specified that solvent polarity has a considerable effect on entire energy reduction [۲]. The study on the solvent effect on the reaction constant of tert-butyl radical addition to ۲-substituted allyl cholorides (Yuh- wern wu, ۲۰۰۵) which lead to determine ȡ Hamit parameter of SH۲ғfree radical reaction in different solvents so that it indicated some degrees of reaction capability with electron effect of substitutions [۳].

کلیدواژه ها:

Solvent effect ، Pyridine carbaldehyde ، Protonation constand ، Potentiometer