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Crown compounds for anions: Sandwich and half-sandwich complexes of cyclic trimeric perfluoro-o-phenylenemercury with polyhedral closo[B10H10](2-) and closo-[B12H12](2-) anionsстатья
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: 24 марта 2017 г.
- Авторы: Shubina E.S., Tikhonova I.A., Bakhmutova E.V., Dolgushin F.M., Antipin M.Y., Bakhmutov V.I., Sivaev I.B., Teplitskaya L.N., Chizhevsky I.T., Pisareva IV, Bregadze V.I., Epstein L.M., Shur V.B.
- Журнал: Chemistry - A European Journal
- Том: 7
- Номер: 17
- Год издания: 2001
- Издательство: John Wiley & Sons Ltd.
- Местоположение издательства: United Kingdom
- Первая страница: 3783
- Последняя страница: 3790
- DOI: 10.1002/1521-3765(20010903)7:17<3783::AID-CHEM3783>3.0.CO;2-1
- Аннотация: It has been shown by IR and NMR spectroscopy that cyclic trimeric perfluoro-o-phenylenemercury (o-C6F4- Hg)(3) (1) is capable of binding closo-[B10H10](2-) and closo-[B12H12](2-) anions to form complexes [{(o-C6F4Hg)(3)}(B10H10)](2-) (2), [{(o-C6F4Hg)(3)}(2)(B10H10)](2-)(3), [{(o-C6F4Hg)(3)}(B12H12)](2-) (4), and [{(o-C6F4Hg)(3)}(2)(B12H12)](2-) (5). According to IR data, the bonding of the [B10H10](2-) and [B12H12](2-) ions to the macrocycle in these complexes is accomplished through the formation of B-H-Hg bridges. Complexes 2, 3, and 5 have been isolated in analytically pure form and have been characterized by spectroscopic means. X-ray diffraction studies of 3 and 5 have revealed that these compounds have unusual sandwich structures, in which the polyhedral dianion is located between the planes of two molecules of 1 and is bonded to each of them through two types of B-H-Hg bridges. One type is the simultaneous coordination of a B-H group to all three Ha atoms of the macrocycle. The other type is the coordination of a B-H group to a single Hg atom of the cycle. According to X-ray diffraction data, complex 2 has an analogous but half-sandwich structure. The obtained complexes 2-5 are quite stable; their stability constants in THF/acetone (1:1) at 20 degreesC have been determined as 1.0 x 10(2) L mol(-1), 2.6 x 10(3) L-2 mol(-2), 0.7 x 10(2)Lmol(-1), and 0.98 x 10(3) L-2 mol(-2), respectively.
- Добавил в систему: Шубина Елена Соломоновна