INVESTIGATION OF THERMOCHEMICAL PROPERTIES OF THE COMPLEXES OF TRANSITION METAL WITH L-TYROSINE

The complexes of transition metal(Cu(Ⅱ),Ni(Ⅱ))with L-tyrosine were synthesized.The composition and the thermal stability of the complexes were investigated by chemical analysis,IR and TG-DTA.The composition of the complexes are determined with Cu(Tyr)(Ac)₂·3H₂O and Ni(Tyr)Cl₂·2H₂O.The constant volume combustion energies of the complexes have been determined by a HWR-15 type constant temperature computer calorimeter.The standard molar enthalpy of combustion(Δ_cH^Øm)and the standard molar enthalpy of formation(Δ_fH^Øm)were calculated.