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Role of basic sites of substituted ferrocenes in interaction with the trinuclear 3, 5-bis (trifluoromethyl) pyrazolates: thermodynamics and structure of complexesстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
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Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 11 марта 2017 г.
- Авторы: Titov Alexey A., Filippov Oleg A., Guseva Ekaterina A., Smol’yakov Alexander F., Dolgushin Fedor M., Epstein Lina M., Belsky Vitaly K., Shubina Elena S.
- Журнал: RSC advances
- Том: 4
- Номер: 16
- Год издания: 2014
- Издательство: Royal Society of Chemistry
- Местоположение издательства: United Kingdom
- Первая страница: 8350
- Последняя страница: 8359
- DOI: 10.1039/c3ra47040g
- Аннотация: Formation of complexes of the macrocycles (ML)3, where L = 3,5-(CF3)2Pz = 3,5-bis(trifluoromethyl)pyrazolate, M = Cu and Ag, and the acylferrocenes FcC(O)CH2R (Fc = (C5H5)Fe(C5H4); R ¼ H (1), Ph (2)) was studied by means of variable temperature IR, UV-vis, NMR spectroscopy. The sole site of coordination in solution is the oxygen atom of the CO group. The complex composition (1 : 1) and thermodynamic parameters in hexane solution were determined, the formation constants and the enthalpies decreasing from 1 to 2 and from Ag to the Cu macrocycle. The same coordination site featuring triple coordination of oxygen to all metal atoms of a macrocycle was found in the solid state by single crystal X-ray diffraction. There are no shortened contacts of the metal in the macrocycles with p-electron system of the ferrocene's cyclopentadienyl ligands in all complexes. The complexes of (ML)3 with 1 have 1 : 2 composition and bipyramidal structure whereas 2 forms the 1 : 1 complex with (AgL)3. The latter is packed in the infinite stacks involving additional contacts with Ph groups.
- Добавил в систему: Титов Алексей Александрович