A relationship is established, using the least squares method, between the standard enthalpy of formation and the standard enthalpy of formation divided by the exothermic denitration decomposition peak absolute temper...A relationship is established, using the least squares method, between the standard enthalpy of formation and the standard enthalpy of formation divided by the exothermic denitration decomposition peak absolute temperature corresponding to β →0.展开更多
A coordination complex was synthesized from NiCl2 and dipeptide glycylglycine（GG）. It was characterized by element analysis, NMR and TG methods, and then was determined to be Ni（C4HsN2O3）2Cl2. Using an isoperiboli...A coordination complex was synthesized from NiCl2 and dipeptide glycylglycine（GG）. It was characterized by element analysis, NMR and TG methods, and then was determined to be Ni（C4HsN2O3）2Cl2. Using an isoperibolic reaction calorimeter, the standard molar enthalpy of formation of Ni（GG）2Cl2（solid） has been determined to be -（1 674.66±2.02） kJ · mol^-1 at 298.15 K.展开更多
The standard formation enthalpy of the glycine complex with erbium chloride was determined by using an isoperibolic calorimeter with the hydrochloric acid solution(2 mol/L) as a calorimetric solvent according a propos...The standard formation enthalpy of the glycine complex with erbium chloride was determined by using an isoperibolic calorimeter with the hydrochloric acid solution(2 mol/L) as a calorimetric solvent according a proposed thermochemical cycle. The following values were obtained: Δ r H θ m(298.15 K)=-3.331 kJ/mol Δ f H θ m(Er(Gly) 3Cl 3·3H 2O,s,298.15 K)=-3 632.0展开更多
文摘A relationship is established, using the least squares method, between the standard enthalpy of formation and the standard enthalpy of formation divided by the exothermic denitration decomposition peak absolute temperature corresponding to β →0.
基金Supported by the National Natural Science Foundation of China (20373050).
文摘A coordination complex was synthesized from NiCl2 and dipeptide glycylglycine（GG）. It was characterized by element analysis, NMR and TG methods, and then was determined to be Ni（C4HsN2O3）2Cl2. Using an isoperibolic reaction calorimeter, the standard molar enthalpy of formation of Ni（GG）2Cl2（solid） has been determined to be -（1 674.66±2.02） kJ · mol^-1 at 298.15 K.
文摘The standard formation enthalpy of the glycine complex with erbium chloride was determined by using an isoperibolic calorimeter with the hydrochloric acid solution(2 mol/L) as a calorimetric solvent according a proposed thermochemical cycle. The following values were obtained: Δ r H θ m(298.15 K)=-3.331 kJ/mol Δ f H θ m(Er(Gly) 3Cl 3·3H 2O,s,298.15 K)=-3 632.0
基金the National Natural Science Foundation of China(21273171,21127004,21173168)Scientific Research Program Funded by Shaanxi Provincial Education Department,China(11JK0578,11JS110)~~
文摘利用精密绝热热量仪测定了配合化合物Zn(Met)_3(NO_3)_2·H_2O(s)(Met=L-α-蛋氨酸)在78-371 K温区的摩尔热容.通过热容曲线解析,得到了该配合物的起始脱水温度为T_D=325.10 K.将该温区的摩尔热容实验值用最小二乘法拟合得到了摩尔热容(C_p)对约化温度(T)的多项式方程,由此计算得到了配合物的舒平热容值和热力学函数值.基于设计的热化学循环,选择100 mL 2 mol·L^(-1)HCl溶液为量热溶剂,利用等温环境溶解-反应热量计,得到了298.15 K配合物的标准摩尔生成焓Δ_f H_m^0[Zn(Met)_3(NO_3)_2·H_2O,s]=-(1472.65±0.76)J·mol^(-1).
