FROM CP+2NB(ETA-2-S2)H TO CP+3NB3S12 - REACTIVITY STUDIES ON NIOBOCENE SULFIDES

被引：19

作者：

BRUNNER, H

GEHART, G

MEIER, W

WACHTER, J

NUBER, B

机构：

[1] UNIV REGENSBURG,INST ANORGAN CHEM,UNIV STR 31,W-8400 REGENSBURG,GERMANY

[2] UNIV HEIDELBERG,INST ANORGAN CHEM,W-6900 HEIDELBERG,GERMANY

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1993年 / 454卷 / 1-2期

关键词：

D O I：

10.1016/0022-328X(93)83232-K

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The reaction of Cp+2bBH4 with sulfur gives two isomers of composition Cp+2NbS2H (3, 4) and Cp+2NbS3H (5). The structures of 3-5 have been investigated by IR and H-1 NMR spectroscopic means. X-Ray diffraction analyses have been performed on 3 and 4. These investigations demonstrate that 3 and 4 are niobocene derivatives, in which either a eta2-S-2(2)--ligand and a hydride (3) or a S2- and a SH- ligand (4) are attached to the Nb center. Complex 3 can be transformed thermally into 4 by a S-S bond rupture, followed by the insertion of sulfur into the Nb-H bond. The polynuclear compounds Cp+3Nb3S7 (6) and Cp+3Nb3S12 (7) can be formed by the reaction of 3 with S8. The role of polysulfide intermediates is discussed.

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页码：117 / 122

页数：6

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