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本文用绝热量热计测定了2-氯-6-(三氯甲基)吡啶在13—316K温区内的热容。没有发现该化合物在此温区内有相变或热异常现象。用有效频率分布法将实验热容值拟合成平滑曲线并外推至OK,得到13K以下的热容值。将本文数据与前文数据结合,导出了该化合物在0—400K温区内的标准热力学函数。当T=298.15K时,该化合物的C°_P(T),S°(T)—S°(0),[H°(T)—H°(0)]/T和—[G°(T)—H°(0)]/T分别为189.35,244.60,112.45和132.15 J K~(-1) mol~(-1)。
In this paper, the heat capacity of 2-chloro-6- (trichloromethyl) pyridine in the temperature range of 13-316K was measured by adiabatic calorimeter. No phase change or thermal anomalies were observed in this temperature range. Using the effective frequency distribution method, the experimental heat capacity is fitted to a smooth curve and extrapolated to OK to obtain the heat capacity below 13K. Combining this data with the previous data, we derive the standard thermodynamic function of the compound in the temperature range of 0-400K. The C ° _P (T), S ° (T) -S ° (0), [H ° (T) -H ° (0)] / T and - [G ° T) -H ° (0)] / T were 189.35, 244.60, 112.45 and 132.15 JK -1 mol -1, respectively.