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The preparation, crystal structure and electrochemistry of (5Z,5 ' Z)-2,2 '-(alkane-alpha,omega-diylsulfanyldiyl)bis(5-(3-pyridylmethylene)-3,5-di hydro-4H-imidazol-4-ones) and their complexes with cobalt(II) chlorideстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Beloglazkina Elena K., Alexander G Majouga, Romashkina Renata B., Moiseeva Anna A., Zyk Nikolai V.
- Журнал: Polyhedron
- Том: 26
- Номер: 4
- Год издания: 2007
- Издательство: Pergamon Press
- Местоположение издательства: United States
- Первая страница: 797
- Последняя страница: 802
- DOI: 10.1016/j.poly.2006.09.012
- Аннотация: A series of S-alkylated derivatives of 2-thiohydantoins, containing two 5-(3-pyridylmethylene)-3,5-dihydro-4H-imiazole-4-one fragments joined by polymethylene bridges with different numbers of carbon atoms, was synthesized. The title (5Z,5'Z)-2,2'-(alkane-alpha,omega-diylsulfanyldiyl)bis(5-(3-pyridylmethy lene)-3,5-dihydro-4H-imidazol-4-ones) (L) were obtained by alkylation of 5-(3-pyridylmethylene)-3-phenyl-2-thiohydantoine by 1,2-dibromoethane, 1,6-dibromohexane or 1, 10-dibromodecane in DMF in the presence of potassium carbonate. The complexes of ligands L with CoCl2 center dot 6H(2)O have been synthesized. It is shown that, regardless of the L:CoCl2 ratio, complexes with LCoCl2 composition are obtained in all cases. The structure of the cobalt(II) chloride complex with (5Z,5'Z)-2,2'-(ethane-1,2-diyldisulfanyldiyl)bis(5-(3-pyridylmethylene)- 3-phenyl-3,5-dihydro-4H-imidazol-4-one) was determined by means of the RSA method. The cobalt atom in this complex has a tetrahedral ligand environment and it is coordinated by two chloride anions and two nitrogen atoms of pyridine fragments, forming a 19-membered metallocycle. Electrochemical investigations of the synthesized ligands and complexes have been made by CVA and RDE methods. It is established that the first stage of reduction for the complexes takes place on the metal, whereas the first stage of oxidation takes place on the coordinated chloride-anions. (c) 2006 Elsevier Ltd. All rights reserved.
- Добавил в систему: Мажуга Александр Георгиевич