CONTRIBUTIONS TO THE CHEMISTRY OF BORON .230. ELECTROPHILIC BORYLATION OF METALLOCENES - SYNTHESIS AND MOLECULAR-STRUCTURES OF 1,1',3,3'-TETRAKIS(DIBROMOBORYL)METALLOCENES OF THE IRON TRIAD

被引：50

作者：

APPEL, A ^{[1
]}

NOTH, H ^{[1
]}

SCHMIDT, M ^{[1
]}

机构：

[1] UNIV MUNICH,INST INORGAN CHEM,D-80333 MUNICH,GERMANY

来源：

CHEMISCHE BERICHTE | 1995年 / 128卷 / 06期

关键词：

FERROCENE; TETRAKIS(DIBROMOBORYL); RUTHENOCENE; OSMOCENE;

D O I：

10.1002/cber.19951280615

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Reactions of metallocenes MCp(2) (M = Fe, Ru, Os) with an excess of BBR(3) at reflux temperature lead specifically to 1,1',3,3'-tetrakis(dibromoboryl)metallocenes 3, 7, and 8 in high yield. MeBBr(2) and PhBBr(2) are less effective borylating agents. X-ray structural analyses of 3, 7, and 8 reveal an increasing tilt of the Br2B groups towards the metal center while retaining the trigonal-planar environment at the boron atoms. This indicates a weak metal-boron interaction of the kind found for carbon-metal interactions in ferrocenyl carbocations.

引用

页码：621 / 626

页数：6

共 23 条

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