(PENTAMETHYLCYCLOPENTADIENYL)RHODIUM AND IRIDIUM COMPLEXES .24. PREPARATION, X-RAY CRYSTAL-STRUCTURE, AND PROPERTIES OF [RH4(ETA-5-C5ME5)4H4]2+

被引：34

作者：

ESPINET, P ^{[1
]}

BAILEY, PM ^{[1
]}

PIRAINO, P ^{[1
]}

MAITLIS, PM ^{[1
]}

机构：

[1] UNIV SHEFFIELD,DEPT CHEM,SHEFFIELD S3 7HF,S YORKSHIRE,ENGLAND

来源：

INORGANIC CHEMISTRY | 1979年 / 18卷 / 10期

关键词：

D O I：

10.1021/ic50200a014

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reaction of [Rh2(µ-OH)3(η5-C5Me5)2]JCIH2O in water with hydrogen (90 °C, 1 atm) gives the green tetranuclear dication [Rh4H4(C5Me5)4]2+, 2Y-(Y-=CI-, PF6, or BF4-; 2Y-=PtCl42-). The BF4- salt was characterized by X-ray crystallography (tetragonal unit cell with a=11.763 (5) υ and c=15.522 (6) υ, space group 14), the structure was solved by Patterson and Fourier techniques and gave a final R of 0.039. The dication contains four rhodium atoms, each bearing a η5-C5Mcs ligand, arranged in a distorted tetrahedral manner (D2d symmetry) with two short (2.655 (1) υ) and four long (2.829 (1) υ) Rh-Rh bonds. The presence of four hydride ligands in the cation has been shown by NMR spectroscopy; they do not take part in any major fluxional process. It is proposed that the four hydrides bridge the four long Rh-Rh bonds. © 1979, American Chemical Society. All rights reserved.

引用

页码：2706 / 2710

页数：5

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