CONTRIBUTIONS TO THE CHEMISTRY OF BORON .224. REACTIONS AND STRUCTURE OF ELECTRON-PRECISE TRIBORANE(5) AND TETRABORANE(6) DERIVATIVES

被引：44

作者：

LINTI, G ^{[1
]}

LODERER, D ^{[1
]}

NOTH, H ^{[1
]}

POLBORN, K ^{[1
]}

RATTAY, W ^{[1
]}

机构：

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

来源：

CHEMISCHE BERICHTE | 1994年 / 127卷 / 10期

关键词：

TRIBORANES(5); 1; OMEGA-DISUBSTITUTED; TETRABORANES(6); HEXABORANE(8); OCTAKIS(DIMETHYLAMINO); ELECTRON-PRECISE POLYBORANES;

D O I：

10.1002/cber.19941271015

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

An improved synthesis of B3(NMe2)5 (2), B4(NMe2)6 (1), and B6(NMe2)8 (4) is reported. From each compound two of the four terminal dimethylamino groups are readily replaced by halogen atoms yielding alpha,omega-dihalides B(n)(NMe2)(n)X2 (n = 3, 4; X = Cl, Br, I). These are used in turn to replace the substituent X by groups like RO, RS, RHN, R2P, and R. Crystal structure determinations on several of these compounds reveal as a common feature planar (C2N)BB2 and (C2N)B(B)X groups which are arranged in an approximately orthogonal manner to one another with NBBN dihedral angles ranging from 69 to 104.6-degrees. Consequently, there is no significant pi bonding between the boron atoms.

引用

页码：1909 / 1922

页数：14

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