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Citation: LI Huan-Yong, CHEN San-Ping, GAO Sheng-Li, YANG Xu-Wu, JU Zhan-Feng. Synthesis and Physico-chemical Property of Nickel L-Threonate[J]. Chinese Journal of Applied Chemistry, ;2002, 19(11): 1094-1096. shu

Synthesis and Physico-chemical Property of Nickel L-Threonate

1.
Shaanxi Provincial Key Laboratory of Physico-inorganic Chemistry, Department of Chemistry, Northwest University, Xi'an 710069

Corresponding author: GAO Sheng-Li,
Received Date: 18 March 2002
Available Online: 22 July 2002
Fund Project: 国家自然科学基金资助项目(No.20171036) (No.20171036)

The pale green powder of nickel L-threonate Ni(C₄H₇O₅)₂·2H₂O was prepared from excess nickelous dihydroxycarbonate and L-threonic acid obtained by double decomposition reaction of calcium L-threonate with oxalic acid at 80℃ for 2 h. The IR spectra indicated that Ni²⁺ was in coordination with oxygen atom of the carboxyl group of L-threonic acid with coordination number of 4. The TG-DTG results showed the compound discomposes into NiO at 380℃ in nitrogen atmosphere. The constant volume combustion energy of the compound, Δ_cE, determined by a precise rotating-bomb combustion calorimeter at 298.15 K, was (-3 515.22±1.97) kJ/mol. The standard enthalpy of combustion, Δ_cH_m⁰, and standard enthalpy of formation, Δ_fH_m⁰, were calculated to be -3 512.74±1.97 kJ/mol and -2 447.51±2.26 kJ/mol, respectively.
- nickel L-threonate,
- synthesis,
- physico-chemical property
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