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Novel chromium trinuclear trifluoroacetate complexes Cr-3(mu(3)-O)(CF3COO)(6)(CH3COOH)(2)(CF3COO) and Cr-3(mu(3)-O)(CF3COO)(6)(CH3COOH)(2)(THF): Synthesis and crystal structureстатья
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Glazunova T.Y., Boltalin A.I., Troyanov S.I.
- Журнал: Russian Journal of Coordination Chemistry/Koordinatsionnaya Khimiya
- Том: 31
- Номер: 4
- Год издания: 2005
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 247
- Последняя страница: 252
- DOI: 10.1007/s11173-005-0085-3
- Аннотация: Novel anhydrous trinuclear mu-oxo complexes of Cr(III), Cr-3(mu(3)-O)(CF3COO)(6)(CH3COOH)(2)(CF3COO) (I) and of Cr(III,III,II), Cr-3(mu(3)-O)(CF3COO)(6)(CH3COOH)(2)(THF) (II) (where THF is (CH2)(4)O) are synthesized by anodic dissolution of metallic chromium in solutions of trifluoroacetic acid in acetonitrile and in tetrahydrofuran and their structures are studied by X-ray diffraction analysis. Complex I forms orthorhombic crystals with space group Pna2(1), a = 9.778(1) angstrom, b = 16.042(2) angstrom, c = 22.851(4) angstrom, Z = 4, R-1 = 0.0332; complex II crystallizes in monoclinic system: space group P2(1)/c, a = 9.866(1) angstrom, b = 17.895(2) angstrom, c = 21.167(4) angstrom, beta = 100.75(2)degrees, Z = 4, R = 0.0422. The average Cr-(mu(3)-O) distances in compounds I and II are almost equal (1.943(3) and 1.927(3) angstrom). An average length of the Cr-O bond in octahedral surrounding of metal atoms is different in complexes I and II (1.985(4) and 2.003(3) angstrom, respectively), which is specified by different oxidation states of the metal atom. The (CrCr)-Cr-... distances lie in an interval of 3.366(1)-3.337(1) angstrom.
- Добавил в систему: Болталин Александр Иванович