Potentiometry, Effect of Solvent and Thermodynamics of Novel Carbohydrazone and Its Transition Metal(II) Complexes

Ahmed A. El-Sherif; Elbastweesy R Elbastweesy; Gaber M. Abu El-Reash; Mutlaq S. Aljahdali

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Potentiometry, Effect of Solvent and Thermodynamics of Novel Carbohydrazone and Its Transition Metal(II) Complexes

机译：新型糖hydr及其过渡金属（II）配合物的电位计，溶剂效应和热力学

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The ligand (2E,2'E)-2,2'-(carbonylbis(hydrazine-2-yl-1-ylidene))dipropionic acid (CBHP) had beensynthesized and characterized using different tools of analysis. Protonation constants of the novel(2E,2'E)-2,2'-(carbonylbis(hydrazine-2-yl-1-ylidene))dipropionic acid (CBHP) ligand and itscorresponding metal-CBHP stability constants with Cu(II), Ni(II), Co(II) and Zn(II) ions weremeasured in aqueous solution at ionic strength (I) of 0.1 mol.dm -3 NaNO 3 . The order of stability for theformed complexes with reference to the metal ions complies with this order Cu(II) > Ni(II) > Co(II) >Zn(II) in harmony with the Irving-Williams stability order. The speciation of different species insolution has been assessed as a function of pH. The thermodynamic parameters were calculated anddiscussed. The effect of solvent on the protonation equilibria of the ligand was also discussed.

机译：配体（2E，2'E）-2,2'-（羰基双（肼-2-基-1-亚基））二丙酸（CBHP）的合成和表征使用了不同的分析工具。新型（2E，2'E）-2,2'-（羰基双（肼-2-基-1-亚基））二丙酸（CBHP）配体的质子化常数及其与Cu（II）的金属-CBHP稳定常数，Ni（II），Co（II）和Zn（II）离子在水溶液中以0.1 mol.dm -3 NaNO 3的离子强度（I）测量。所形成的配合物相对于金属离子的稳定性顺序与Irving-Williams稳定性顺序一致，符合该顺序Cu（II）> Ni（II）> Co（II）> Zn（II）。已评估了不同物种溶液中物种的形成与pH的关系。计算并讨论了热力学参数。还讨论了溶剂对配体的质子化平衡的影响。

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《International Journal of Electrochemical Science》 |2019年第8期|共17页
作者
Ahmed A. El-Sherif; Elbastweesy R Elbastweesy; Gaber M. Abu El-Reash; Mutlaq S. Aljahdali;
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中图分类化学;
关键词
CarbohydrazoneComplexspeciationThermodynamicsNickelPotentiometry;

机译：碳氢化合物复杂形态热力学镍电位计;

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Potentiometry, Effect of Solvent and Thermodynamics of Novel Carbohydrazone and Its Transition Metal(II) Complexes

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