CHEMISTRY OF TETRABORON TETRACHLORIDE - SYNTHESIS AND CHARACTERIZATION OF TETRABORON TETRABROMIDE (B4BR4) AND OBSERVATION OF B4BRCL3, B4BR2CL2, AND B4BR3CL

被引：11

作者：

AHMED, L ^{[1
]}

CASTILLO, J ^{[1
]}

MORRISON, JA ^{[1
]}

机构：

[1] UNIV ILLINOIS,DEPT CHEM,MC 111,CHICAGO,IL 60680

来源：

INORGANIC CHEMISTRY | 1992年 / 31卷 / 10期

关键词：

D O I：

10.1021/ic00036a025

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

In the absence of added solvent, B4Cl4 and BBr3, present in a 1:5 mole ratio, generated B4BrCl3 in approximately 13% yield after 800 h at 95-degrees-C. Repeated exposure of B4Cl4 to fresh aliquots of BBr3 and pentane at 95-degrees-C did ultimately (2200 h) form B4Br4 and the mixed ligand species B4Br3Cl, B4Br2Cl2, and B4BrCl3, but the quantities provided were small. The boron-11 NMR data for the bromochlorotetraboranes are consistent with a tetrahedral configuration of the boron atoms rather than a square-planar-based array. In thc presence of AlBr3, B4Br4 was generated from the interaction of B4Cl4 with BBr3 at 95-degrees-C and isolated in 80% yield. After 144 h at 110-degrees-C, the reaction of B4Br4 with excess BCl3 regenerated B4Cl4 in ca. 90% yield.

引用

页码：1858 / 1860

页数：3

共 19 条

[1] REACTIVITY OF THE DIBORON TETRAHALIDES - DIBORATION OF ETHYLENE WITH DIBORON TETRABROMIDE AND THERMAL-DECOMPOSITION AND LIGAND EXCHANGES OF DIBORON TETRABROMIDE AND DIBORON TETRACHLORIDE IN CARBON TETRABROMIDE AND CARBON-TETRACHLORIDE [J].