Abstract Two heteroligand volatile magnesium(II) β-diketonate complexes with 2,2′-bipyridine [Mg(bipy)(thd)2] and 1,10-phenanthroline [Mg(phen)(thd)2], CASRN 182566-25-2, (thd = 2,2,6,6-tetramethylheptane-3,5-dionate-anion) have been synthesized. The compounds have been purified and properly characterized to investigate further their sublimation and melting processes. Their vapor pressures have been measured by using the flow method for the first time. Based on these data, thermodynamic characteristics of enthalpy and entropy of sublimation have been calculated at the average temperature of the experimental range. Condensed phase thermal behavior up to melting has been studied by differential scanning calorimetry and the corresponding thermodynamic characteristics have been determined. Data on sublimation has been processed in order to adjust the values of enthalpy and entropy of the processes at the reference temperature of 298.15 K. Whole set of a new thermochemical data could serve as a base for definition of optimal evaporator temperature regimes in chemical vapor deposition of MgO films using [Mg(bipy)(thd)2] and [Mg(phen)(thd)2] as precursors.

中文翻译：

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2,2,6,6-四甲基庚烷-3,5-二酮和芳香二胺的挥发性杂配体镁配合物的热化学研究

摘要 两种杂配体挥发性镁 (II) β-二酮酸盐与 2,2'-联吡啶 [Mg(bipy)(thd)2] 和 1,10-菲咯啉 [Mg(phen)(thd)2] 的复合物，CASRN 182566-25 -2, (thd = 2,2,6,6-tetramethylheptane-3,5-dionate-anion) 已合成。这些化合物已经过纯化和适当的表征，以进一步研究它们的升华和熔化过程。它们的蒸气压是首次使用流动法测量的。基于这些数据，计算了实验范围平均温度下的焓和升华熵的热力学特性。已经通过差示扫描量热法研究了直至熔化的凝聚相热行为，并且已经确定了相应的热力学特性。