First structurally characterised lithium hexafluorophosphate complexes with acyclic Lewis bases:: ion-separated [Li2(hmpa)5]2+•2(PF6-) and ion-contacted [(pmdeta)LiPF6]2 [hmpa = (Me2N)3PO;: pmdeta = MeN(CH2CH2NMe2)2]

被引：20

作者：

Armstrong, DR

Khandelwal, AH

Kerr, LC

Peasey, S

Raithby, PR

Shields, GP

Snaith, R

Wright, DS

机构：

[1] Univ Cambridge, Dept Chem, Cambridge CB2 1EW, England

[2] Univ Strathclyde, Dept Pure & Appl Chem, Glasgow G1 1XL, Lanark, Scotland

[3] Def Evaluat & Res Agcy, Struct Mat Ctr, Farnborough GU14 0LX, Hants, England

来源：

CHEMICAL COMMUNICATIONS | 1998年 / 09期

关键词：

D O I：

10.1039/a801280f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Reactions of NH4PF6 with (BuLi)-Li-n in toluene containing hmpa or pmdeta afford the complexes [Li-2(hmpa)(5)](2+). 2(PF6)(-) 1, an ion-separated species containing an unusual dinuclear dication, and [(pmdeta)LiPF6](2) in which PF6- anions bridge (pmdeta)Li+ units via Li ... F interactions, this being the first observation of a bridging mode for this anion; ab initio MO calculations help explain the very different structures of 1 and 2.

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页码：1011 / 1012

页数：2

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