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首页> 外文期刊>Journal of Chemical and Engineering Data: the ACS Journal for Data >Thermochemical Study on Ternary Complexes of Dysprosium with Aromatic Acids and Phenanthroline
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Thermochemical Study on Ternary Complexes of Dysprosium with Aromatic Acids and Phenanthroline

机译：Dy与芳香酸和邻菲咯啉三元配合物的热化学研究

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摘要

Three ternary Dy(III) complexes were synthesized with aromatic acids (p-nitrobenzoic acid, m-nitrobenzoic acid, and ο-chlorobenzoic acid) as the first ligand and 1,10-phenanthroline as the second ligand. In accordance with Hess's law, a reasonable thermochemical cycle was designed, and standard molar enthalpies of dissolution for the reactants and products of the coordination reactions in the selected solvent were measured by a solution-reaction isoperibol calorimeter, respectively. In addition, the enthalpy changes of the coordination reactions were determined. Finally, the standard molar enthalpies of formation of the three synthetic coordination complexes were estimated to be Δ_fH_m~θ[[Dy(p-NBA)3phen]2·3H20(s), 298.15 K] = -(5177 ± 8) kJ·mol~(-1), Δ_fH_m~θ[[Dy(m-NBA)3phen]2·4H2O(s), 298.15 K] = -(5452 ± 6) kJ·mol~(-1), and Δ_fH_m~θ[[Dy-(ο-ClBA)3phen]2(s), 298.15 K] = -(5317 ± 7) kJ-mol~(-1).
机译：合成了三种三元Dy（III）配合物，其中芳香酸（对硝基苯甲酸，间硝基苯甲酸和邻氯苯甲酸）为第一配体，而1,10-菲咯啉为第二配体。根据赫斯定律，设计了一个合理的热化学循环，并通过溶液反应等温量热仪分别测量了所选溶剂中反应物和配位反应产物的标准溶解摩尔焓。另外，确定了配位反应的焓变化。最后，估计三个合成配位配合物形成的标准摩尔焓为Δ_fH_m〜θ[[Dy（p-NBA）3phen] 2·3H20（s），298.15 K] =-（5177±8）kJ· mol〜（-1），Δ_fH_m〜θ[[Dy（m-NBA）3phen] 2·4H2O（s），298.15 K] =-（5452±6）kJ·mol〜（-1）和Δ_fH_m〜θ [[Dy-（-ClBA）3phen] 2（s），298.15 K] =-（5317±7）kJ-mol〜（-1）。

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