Закономерности образования комплексов кобальта (II)
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Дата
2014
DOI
Науковий ступінь
Рівень дисертації
Шифр та назва спеціальності
Рада захисту
Установа захисту
Науковий керівник
Члени комітету
Видавець
Национальный технический университет "Харьковский политехнический институт"
Анотація
Потенциометрическим методом изучено комплексообразование Со(II) с цитратом натрия, дифосфатом калия, динатриевой солью этилендиаминтетрауксусной кислоты (Na2H2Y). Установлен состав монолигандных комплексов кобальта (II) при различных соотношениях концентраций комплексообразователя и лигандов. Рассчитаны значения констант нестойкости комплексов. Показана перспективность их использования при разработке электролитов для нанесения покрытий кобальтом, а также бинарными и тернарными сплавами кобальта с тугоплавкими металлами.
In this work method potentiometrically was studied complexation Co (II) with sodium citrate, potassium diphosphate, disodium salt of thylenediaminetetraacetic acid (Na2H2Y). The composition monoligand complexes of cobalt (II) at different values and concentrations of complexing ligands was defined. According to the analysis of experimental data, it was found that in systems, Со2+ – C3H5O(COO)3 3−, Со2+ – H2Y2− with increasing concentration of the ligand complexes have a constant composition, and Со2+ – P2O7 4− tend to change the composition of the complex. The calculated values of the instability constants of complexes create the preconditions for the development of electrolytes for galvanic deposition cobalt coatings, as well as binary and ternary alloys, cobalt with refractory metals, which have higher physical and chemical charactertics , compared with the individual metals. The spent methodology for conducting experiments in the future, is applicable for the determination of mixed complexes cobalt, as well as mono and poliligand complexes of tungsten and molybdenum.
In this work method potentiometrically was studied complexation Co (II) with sodium citrate, potassium diphosphate, disodium salt of thylenediaminetetraacetic acid (Na2H2Y). The composition monoligand complexes of cobalt (II) at different values and concentrations of complexing ligands was defined. According to the analysis of experimental data, it was found that in systems, Со2+ – C3H5O(COO)3 3−, Со2+ – H2Y2− with increasing concentration of the ligand complexes have a constant composition, and Со2+ – P2O7 4− tend to change the composition of the complex. The calculated values of the instability constants of complexes create the preconditions for the development of electrolytes for galvanic deposition cobalt coatings, as well as binary and ternary alloys, cobalt with refractory metals, which have higher physical and chemical charactertics , compared with the individual metals. The spent methodology for conducting experiments in the future, is applicable for the determination of mixed complexes cobalt, as well as mono and poliligand complexes of tungsten and molybdenum.
Опис
Ключові слова
потенциометрия, координационное число, константа нестойкости, комплексообразование, кобальт, цитрат-ион, монолигандный комплекс, potentiometry, coordination number, instability constant, cobalt, citrate ion, monoligandny complex
Бібліографічний опис
Закономерности образования комплексов кобальта (II) / Ю. К. Гапон [и др.] // Вестник Нац. техн. ун-та "ХПИ" : сб. науч. тр. Темат. вып. : Химия, химическая технология и экология. – Харьков : НТУ "ХПИ". – 2014. – № 51 (1093). – С. 136-140.