Potentiomet ric study of comp lexation b etween C o۲+ and pydc/۲-ap ym proton transfer and comprising with solid state re sults

The different aspects of proto n transfer systems ha ve been studied by ch emists in the recent years [۱]. An interesting report in this area was i nvestigation of the me chanism of proton transfer from intra-molecularly hydroge n-bonded a cids and di fferences b etween nitrogen-to-oxygen and nitr ogen-to-nitrogen proton transfer. Somee xamples of proton transfer polymerization ha ve been als o reported. We ha ve previously reported the protonation constants of Pyridine-۲,۶-dicarboxylic acid(pydc), ۲-Aminopyrimidine(۲-apym) species and the equilibrium constants for the proton transfer formation between th em in seve ral protona ted forms in aqueous solution [۲].In this work th e stoiciometry and st ability of c omplexatio n of this system with Co۲+ion in aqueous solutio ns. The stoichiometry of the most species in solution was compared to the corresponding cry stalline cited complexes.

کلیدواژه ها:

Pyridin e-۲ ، ۶-dicarboxylic acid ، ۲- Aminopyri midine ، ، Solution studies ، potenti ometric