A selective synthesis of hydroxyborate anions as novel anchors for zirconocene catalysts

被引：14

作者：

Bibal, Christine ^{[1
]}

Santini, Catherine C. ^{[1
]}

Chauvin, Yves ^{[1
]}

Vallee, Christophe ^{[2
]}

Olivier-Bourbigou, Helene ^{[2
]}

机构：

[1] Univ Lyon, CNRS ESCPE Lyon, UMR 5265, ICL,LC2P2,Lab Chim Organomet Surface, F-69626 Villeurbanne, France

[2] Inst Francais Petr Lyon, F-69360 Solaize, France

来源：

DALTON TRANSACTIONS | 2008年 / 21期

关键词：

D O I：

10.1039/b718057h

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new family of hydroxytris(pentafluorophenyl) borate anions [B(C(6)F(5))(3)OH](-) associated with organic and aprotic cations c(+) (imidazolium, pyrrolidinium and phosphonium) has been prepared by a general one-pot synthesis that implies the chloride borate analogues [B(C(6)F(5))(3)Cl](-)[c](+). The [c](+)[B(C(6)F(5))(3)OH]salts have been isolated and fully characterized. The borate anion [B(C(6)F(5))(3)OH](-) has been shown to protonate the Zr-Me bond in the Cp(2)ZrMe(2) complex forming CH(4) and the first published example of anionic [Cp(2)Zr(Me)OB(C(6)F(5))(3)](-) species. Standard spectroscopic methods demonstrate the covalent character of the Zr metal center and the anionic character of the boron atom. This protonolysis methodology using [B(C(6)F(5))(3)OH](-) anion affords a new route for the incorporation of a covalently bonded anionic functionality on organometallic complexes. This provides a new way to immobilize transition metal complexes in ionic liquids.

引用

页码：2866 / 2870

页数：5

共 40 条

[1]

Andresen A., 1976, ANGEW CHEM, V88, P689

[2] Studies on the reactivity of Nb(η5-C5H4SiMe3)2(X)(L), X = H,Cl;: L = CNXylyl, CNCy, CO and Nb(η5-C5H4SiMe3)2(H)3 complexes toward the Lewis acids B(C6F5)3 and BF3 [J].