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在280-500K的温度范围内用自动绝热量热计测定了(n-C_(12)H_(25)NH_2)_2MnCl_4的热容。发现了两个固-固相变,固_(Ⅲ)→固_(Ⅱ)和固_Ⅰ→固_(Ⅱ)。前者的相变温度、相变焓和相变熵分别为330.6±0.1K,47.78±0.29kJ·mol~(-1)和144.5±0.9J·K~(-1)·mol~(-1),后者的对应相变热参数分别为334.5±0.1K,5.96±0.05kJ·mol~(-1)和17.82±0.15J·K~(-1)·mol~(-1)。报道了该物质每隔10K的热力学性质.
The heat capacity of (n-C_ (12) H_ (25) NH_2) _2MnCl_4 was measured with an automatic adiabatic calorimeter in the temperature range of 280-500K. Two solid - solid phase transitions, solid _ (Ⅲ) → solid _ (Ⅱ) and solid _ Ⅰ → solid _ (Ⅱ) were found. The former phase transition temperature, phase transition enthalpy and phase transformation entropy were 330.6 ± 0.1K, 47.78 ± 0.29kJ · mol -1 and 144.5 ± 0.9J · K -1 · mol -1, respectively. , Respectively. The corresponding thermal parameters of the latter were 334.5 ± 0.1K, 5.96 ± 0.05kJ · mol -1 and 17.82 ± 0.15J · K -1 · mol -1, respectively. The thermodynamic properties of this material are reported every 10K.