Isomers of icosaborane(26): some synthetic routes and preliminary characterisations in the bis(nido-decaboranyl) system
作者:Norman N. Greenwood、John D. Kennedy、Trevor R. Spalding、Derek Taylorson
DOI:10.1039/dt9790000840
日期:——
Bis(nido-decaboranyl), (B10H13)2, is the largest neutral borane yet reported; it has 11 possible geometric isomers and four of these should exist as enantiomeric pairs, making a total of 15 distinct structures. Photolytic, thermolytic, and metathetical routes to these compounds have been developed. Five of the geometric isomers have been isolated by chromatography and examined by u.v., n.m.r., and
Bis(nido- decaboranyl),(B 10 H 13)2是迄今报道的最大的中性硼烷;它具有11个可能的几何异构体,其中四个应作为对映异构体对存在,总共形成15个不同的结构。已经开发了这些化合物的光解,热解和易位途径。已经通过色谱法分离了五种几何异构体,并通过uv,nmr和质谱法进行了检测。初步确定了另外三种异构体。光谱数据目前不允许明确的结构分配,但是Mg(B 10 H 13)I与B 10 H 13反应的两个主要产物(Cl-6)可以是(5,6')和(6,6')异构体。