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在298.15K时,采用微热量热仪测定斯蒂芬酸钾盐[K2(TNR)(H2O)]n和斯蒂芬酸铯盐[Cs2(TNR)(H2O)2]n两种含能配合物在水和N,N-二甲基甲酰胺(DMF)溶剂中的溶解热,研究其溶解过程和溶解热化学性质.结果表明,两种配合物溶解于水是吸热过程,而溶解于DMF则为放热过程,这主要是由于溶质和溶剂的分子结构及其极性不同而导致的.通过对实验数据计算拟合,求得这两种配合物的溶解焓(ΔsolH)、相对表观摩尔焓(ФLi)、相对偏摩尔焓(Li)及稀释焓(ΔdilH1,2)的经验公式和标准溶解焓值(ΔsolHm).
At 298.15K, two kinds of energetic complexes of staurifuric acid potassium salt [K2 (TNR) (H2O)] n and cesium stannate salt [Cs2 (TNR) (H2O) 2] n were measured by micro calorimeter in water and N, N-dimethylformamide (DMF), the dissolution and thermochemical properties of the complexes were studied.The results showed that the two complexes dissolved in water are endothermic and dissolved in DMF Thermal process, which is mainly caused by the different molecular structure and polarity of solute and solvent.According to the experimental data, the enthalpy of solution (ΔsolH) and relative molar enthalpy ФLi), the empirical formula of relative partial molar enthalpy (Li) and the dilution enthalpy (ΔdilH1,2), and the standard enthalpy of solution (ΔsolHm).