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0401U001062,
15-03-2001
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The weak exchange interactions between copper(II) cations in bis(salicyliden)hydra-zones binuclear complexes
Sarnit Olena Oleksandrivna,
popup.head Шульгін Віктор Федорович
popup.opponent Сейфулліна Інна Йосипівна
popup.opponent Калібабчук Валентина Олександрівна
popup.opponent Желтвай Іван Іванович
Предмет дослідження -- спін-спінова обмінна взаємодія між парамагнітними центрами на великій відстані (~ 10 A) в мономерних біядерних комплексах. Об'єкт дослідження -- мономерні біядерні комплекси міді(II) з ацилдигідразонами дикарбонових кислот. Мета дослідження: виявлення чинників, що зумовлюють обмін між іонами Cu(II) через ланцюжок s-зв'язків поліметиленового містка в біядерних комплексах з біс(саліциліден)гідразонами дикарбонових кислот. Методи дослідження -- елементний і термогравіметричний аналіз, інфрачервона спектроскопія поглинання, спектроскопія електронного парамагнітного резонансу, рентгеноструктурний аналіз. Наукова новизна одержаних результатів: уперше проведено систематичне і цілеспрямоване дослідження мономерних біядерних комплексів Cu(II) з біс(саліциліден)гідразонами дикарбонових кислот (від малонової до себацинової включно). За даними спектроскопії ЕПР виявлено, що в розчинах мономерних біядерних комплексів Cu(II) з ацилдигідразонами саліцилового альдегіду спостерігається сигнал і з семи ліній надтонкої структури від двох еквівалентних ядер атомів Cu(II) (I = 3/2), розділених ланцюжком із 6--9 s-зв'язків при відстані Cu...Cu до 10 A. Практичне значення одержаних результатів. Отримані дані розширюють коло молекулярних комплексів, для яких спостерігається обмінна взаємодія між парамагнітними центрами через ланцюжок s-зв'язків.Сфера використання: хімія та магнетохімія координаційних сполук.
2001-03-15
2020-04-04
Updated: 2025-12-08
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