Synthesis, Isolation, and Characterization of Trisodium Tricarbonyliridate (3-), Na3[Ir(CO)3]. Initial Studies on Its Derivative Chemistry and Structural Characterizations of
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- 作者：Jessica M. Allen ; William W. Brennessel ; Carrie E. Buss ; John E. Ellis ; Mikhail E. Minyaev ; Maren Pink ; Garry F. Warnock ; Mark L. Winzenburg ; and Victor G. Young ; Jr.
- 刊名：Inorganic Chemistry
- 出版年：2001
- 出版时间：September 24, 2001
- 年：2001
- 卷：40
- 期：20
- 页码：5279 - 5284
- 全文大小：72K
- 年卷期：v.40,no.20(September 24, 2001)
- ISSN：1520-510X
文摘
Reduction of Na[Ir(CO)4] by sodium metal in (Me2N)3PO, followed by treatment with liquid ammonia, providedhigh yields (ca. 90%) of unsolvated Na3[Ir(CO)3], a thermally stable, pyrophoric orange solid. This substancecontains iridium in its lowest known formal oxidation state of -3 and has been characterized by IR spectroscopy,elemental analyses, and derivative chemistry, i.e., by its conversion to the triphenylgermyl and triphenylstannylcomplexes, trans-[Ir(CO)3(EPh3)2]-, E = Ge, Sn. Single-crystal X-ray structures of the tetraethylammonium saltsof these species, as well as [Co(CO)3(SnPh3)2]-, confirm the trigonal bipyramidal nature of the anions, originallypredicted on the basis of their IR spectra in the carbonyl stretching frequency region. These structuralcharacterizations provide important additional evidence for the presence of metal tricarbonyl units in Na3[M(CO)3],M = Co, Ir.