Results of the study of M2I·MII·L2·NH2O type citrates

To determine the nature of citrate ion deprotonation and linking with metals in the M2I·MII·L2·nH2O type chelate compounds, we made and studied their IR absorption spectra, according to which, the synthesized compounds are the internal type chelate compounds and as it was expected, all three deprotonated carboxylic groups of citrate acid form both ionic and coordination bounds with metal atoms.