Low-temperature heat capacity of tetrameric cobalt(II) acetylacetonate (tetrakis[bis(2,4-pentanedionato)cobalt(II)], [Co(C₅H₇O₂)₂]₄) was measured by an adiabatic method in a temperature range from 13.49 to 310.31 K. No phase transition-associated anomalies in the functional behavior of the heat capacity were detected in the entire tested temperature range. The obtained data were used to calculate the Debye characteristic temperature and integral thermodynamic functions (entropy, enthalpy, and reduced Gibbs energy) in a temperature range of 0 to 310 K. The absolute entropy values were used to calculate the formation entropy of [Co(C₅H₇O₂)₂]₄ at T = 298.15 K. A correlation was found between the unit cell volume, normalized to the number of molecules in this cell, and the heat capacity at T = 298.15 K.

中文翻译：

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四聚乙酰丙酮钴（II）的低温热容和热力学功能

通过绝热法在四氟乙酰丙酮钴（II）（四[双（2,4-戊二酮基）钴（II），[Co（C ₅ H ₇ O ₂）₂ ] ₄）]中测定低温热容。温度范围为13.49至310.31K。在整个测试温度范围内，未检测到热容量功能行为的相变相关异常。所得数据用于在0至310 K的温度范围内计算Debye特征温度和积分热力学函数（熵，焓和降低的吉布斯能量）。绝对熵值用于计算[Co（ C ₅ H ₇ O ₂）₂ ] ₄在T = 298.15 K处发现。单位晶胞体积（标准化为该细胞中的分子数）与在T = 298.15 K处的热容量之间存在相关性。