Synthesis, characterization, and properties of silica-supported trimethylphosphine disiloxy tantalum hydride, (SiO)2TaH(PMe3)

被引：20

作者：

Taoufik, M

de Mallmann, A

Prouzet, E

Saggio, G

Thivolle-Cazat, J

Basset, JM

机构：

[1] CNRS, CPE, UMR 9986, Lab Chim Organomet Surface, F-69616 Villeurbanne, France

[2] CNRS, UMR 5635, IEM, LMPM, F-34293 Montpellier 5, France

来源：

ORGANOMETALLICS | 2001年 / 20卷 / 26期

关键词：

D O I：

10.1021/om010188a

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The silica-supported tantalum hydride (drop SiO)(2)TaH reacts with PMe3 to form a new well-defined surface species, the trimethylphosphine disiloxy tantalum hydride (drop SiO)(2)TaH(PMe3). The Ta L-III-edge EXAFS gives a first coordination sphere of ca. two oxygen atoms at 1.955 Angstrom and one phosphorus atom at 2.615 Angstrom. The presence of the phosphine on the metal center cancels the catalytic activity of the tantalum hydride toward metathesis of acyclic alkanes but affords the oligomerization of ethylene into 1-butene and higher oligomers.

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页码：5518 / 5521

页数：4

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