Synthesis, isolation, and characterization of trisodium tricarbonyliridate (3-), Na3[Ir(CO)3].: Initial studies on its derivative chemistry and structural characterizations of trans-[Ir(CO)3(EPh3)2]-, E = Ge, Sn, and trans-[Co(CO)3(SnPh3)2]-

被引:25
作者
Allen, JM [1 ]
Brennessel, WW [1 ]
Buss, CE [1 ]
Ellis, JE [1 ]
Minyaev, ME [1 ]
Pink, M [1 ]
Warnock, GF [1 ]
Winzenburg, ML [1 ]
Young, VG [1 ]
机构
[1] Univ Minnesota, Dept Chem, Minneapolis, MN 55455 USA
关键词
D O I
10.1021/ic0105011
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Reduction of Na[Ir(CO)(4)] by sodium metal in (Me2N)(3)PO, followed by treatment with liquid ammonia, provided high yields (ca. 90%) of unsolvated Na-3[Ir(CO)(3)], a thermally stable, pyrophoric orange solid. This substance contains 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 triphenylstannyl complexes, trans-[Ir(CO)(3)(EPh3)(2)](-), E = Ge, Sn. Single-crystal X-ray structures of the tetraethylammonium salts of these species, as well as [Co(CO)(3)(SnPh3)(2)](-), confirm the trigonal bipyramidal nature of the anions, originally predicted on the basis of their IR spectra in the carbonyl stretching frequency region. These structural characterizations provide important additional evidence for the presence of metal tricarbonyl units in Na-3[M(CO)(3)], M = Co, Ir..
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页码:5279 / 5284
页数:6
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