一种新型膦硼烷稳定的二碳负离子和一种不寻常的双（膦硼烷）的合成与结构表征

Synthesis and structural characterisation of a novel phosphine-borane-stabilised dicarbanion and an unusual bis(phosphine-borane).

作者信息

Izod Keith, McFarlane William, Tyson Brent V, Clegg William, Harrington Ross W

机构信息

Chemistry, School of Natural Sciences, University of Newcastle, Bedson Building, Newcastle upon Tyne, UK NE1 7RU.

出版信息

Chem Commun (Camb). 2004 Mar 7(5):570-1. doi: 10.1039/b315068b. Epub 2004 Jan 29.

DOI:10.1039/b315068b

PMID:14973612

Abstract

The reaction between the phosphine-borane-substituted alkene Pr(n)(2)P(BH(3))C[double bond]CH(2) and elemental lithium in THF yields the complex (pmdeta)Li Pr(n)(2)P(BH(3))CCH(2)(2b) after recrystallisation; an X-ray crystallographic study of 2b reveals that the lithium is bound to the BH(3) hydrogens of the ligand, with no Li-C(carbanion) contact.

摘要

膦硼烷取代的烯烃Pr(n)(2)P(BH(3))C[双键]CH(2)与元素锂在四氢呋喃中反应，重结晶后得到配合物(pmdeta)Li Pr(n)(2)P(BH(3))CCH(2)(2b)；对2b的X射线晶体学研究表明，锂与配体的BH(3)氢原子结合，不存在Li-C(碳负离子)接触。