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本文合成了Lu(NO3)3(C2H5O2N)4·H2O,用红外和元素分析对其进行了表征。用高精度全自动绝热量热仪,测定了该配合物在80~382 K温区的热容,利用实验热容数据,根据热容与焓、熵的热力学关系,求出了配合物在85~350 K温区内每隔5K相对于298.15K的标准热力学函数[HT-H298.15]和[ST-S298.15]。在80~350 K温度区间内,配合物的热容随温度升高而增大,没有相转移点和热力学吸收峰的出现,该配合物在此温度区间内是稳定存在的。
In this paper, Lu (NO3) 3 (C2H5O2N) 4 · H2O was synthesized and characterized by IR and elemental analysis. The heat capacity of the complex in the temperature range of 80 ~ 382 K was measured by high-precision automatic adiabatic calorimeter. Based on the experimental heat capacity data and the thermodynamic relationship between heat capacity and enthalpy and entropy, Standard thermodynamic functions [HT-H298.15] and [ST-S298.15] every 5K relative to 298.15K in ~ 350 K temperature range. In the temperature range of 80 ~ 350 K, the heat capacity of the complex increased with the increase of temperature, and no phase transition point and thermodynamic absorption peak appeared. The complex was stable in this temperature range.