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Abstract
The stoichiometry of the complexes formed by reaction of 4,5-diamino-3- methyl-2,6-dioxo-1, 2, 3, 6-tetrahydropyrimidine hydrochloride (LH2 Cl) with FeCl3 or CrCl3 has been investigated by potentiometric, conductimetric and spectrofotometric methods. An absorcion band of FeL3 complex (λ=510 nm.) allow to obtain the order and activation enthalpy of the reaction.
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