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• W2368271674 abstract "The pale blue powder of copper Lthreonac was obtained by extracting with alcohol in the concentrated solution derived from the reaction between Lthreonate acid solution prepared by double decomposition reaction of calcium Lthreonate with oxalic acid and superfluous copper dihydrocarbonate at 80℃ and 30 min.The composition of the new compound was determined by chemical and elemental analyses and its formula fits Cu(C4H6O5)·05H2O.The IR spectra indicated that Cu2+ in the compound coordinates to oxygen atom of the carboxyl group pentaring and oxygen atom of hydroxy group of ethanol attached to carboxyl group forming,while the proton of the carboxyl group is dissociated.The results of TG-DTG show that the compound has fairish stability,the intermediate and final product of the thermal decomposition of the compound are Cu(C4H6O5) and CuO ,respectively.The constant volume combustion energy of the compound,ΔcE,it is (-16165±072)kJ·mol-1,was determined by a precise rotatingbomb calorimeter at 29815K,and its standard enthalpy of combustion,ΔcHθm,and standard enthalpy of formation,ΔfHθm,were calculated.They are(-161491±072)kJ·mol-1and (-111476±081)kJ·mol-1,respectively." @default.
• W2368271674 created "2016-06-24" @default.
• W2368271674 creator A5088273810 @default.
• W2368271674 date "2003-01-01" @default.
• W2368271674 modified "2023-09-27" @default.
• W2368271674 title "Synthesis and standard enthalpy of formation of copper L-threonate" @default.
• W2368271674 hasPublicationYear "2003" @default.
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