Complexes of some pyrido[1,2-a]pyrimidinium perchlorates with scandium, yttrium, and lanthanum. Crystal and molecular structure of 3-chloro-9-hydroxy-2,4-dimethylpyrido[1,2-a]pyrimidinium perchlorate

Complexes of scandium, yttrium, and lanthanum nitrates with 3-chloro-9-hydroxy-2,4-dimethylpyrido[1,2-a]pyrimidinium perchlorate ((HLClO4)-Cl-1) and 9-hydroxy-2,4-dimethylpyrido[1,2-a]pyrimidinium perchlorate ((HLClO4)-Cl-2) were obtained. Their composition was formulated as Sc(LClO4)(2)(NO3) and M(LClO4)(2)(NO3)(2) (L = L-1 or L-2; M =Y or La); structures for the complexes obtained were proposed. The crystal and molecular structure of (HLClO4)-Cl-1 was determined. Dissociation and complexation of (HLClO4)-Cl-1 and (HLClO4)-Cl-2 in aqueous ethanol were studied using the spectroscopic method. Ligand dissociation and complexation constants were calculated. It was shown that a chlorine-containing organic ligand only slightly changes the composition and stability of the metal complexes.

Авторы
Редакторы
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Издательство
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Номер выпуска
2
Язык
Английский
Страницы
123-128
Статус
Опубликовано
Подразделение
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Ссылка
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Номер
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Том
29
Год
2003
Организации
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Ключевые слова
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Дата создания
19.10.2018
Дата изменения
19.10.2018
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/8940/