Synthesis, Properties and Phase Equilibrium of Zn(NO3)2-Leu-H2O System(25 ℃)

Abstract

Abstract: The solubility of Zn(NO₃)₂-Leu-H₂0 system at 25 ℃ in the entire concentration range has been investigated by phase equilibrium method. The corresponding phase diagram and refractive index diagram have been constructed. The incongruently soluble complexes [Zn(Leu)(NO₃)₂(H₂0)]·H₂0(A) and [Zn(Leu)₂(NO₃)₂·H₂0(B)] which have not been reported in literature, have been prepared. The compounds are characterized by IR spectra, TG-DTG, as well as chemical and elemental analyses. The constant volume combustion energies of the complexes, Δ_cE(complex, s), have been determined by a precision rotating bomb calorimeter at 298.15 K. The standard enthalpies of combustion, ΔcH_m^θ(complex, s), and standard enthalpies of formation, Δ_fH_mθ(complex, s), are calculated for the complexes.

Key words: Ternary system, Zinc nitrate, Leucine, Characterization, Standard enthalpy of formation

CLC Number:

O614

TrendMD:

GAO Sheng-Li, YANG Xu-Wu, CHEN San-Ping, LI Huan-Yong, SHI Qi-Zhen . Synthesis, Properties and Phase Equilibrium of Zn(NO₃)₂-Leu-H₂O System(25 ℃)[J]. Chem. J. Chinese Universities, 2003, 24(2): 195.

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Synthesis, Properties and Phase Equilibrium of Zn(NO₃)₂-Leu-H₂O System(25 ℃)

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