The stability constants for the formation of type 1:1 complex between Ni(ll) and Co(ll) ions and carboxyphenylhydrazo-diethylmalonate in aqueous medium at pH's 8.6 and 8.8 are 3.43 and 4.08 respectively. The solid complexes were prepared and studied by infrared spectra and ultraviolet to propose their structures.
M F EL SHAHAT ,W H MAHMOUD ,B A EL SHERTARY ,
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