Issue 26, 2012
From the journal:

Dalton Transactions

First structural evidence for multiple alkali metals between sandwich decks in a metallocene†

Matthew Jeletic,a   Frédéric A. Perras,a   Serge I. Gorelsky,b   Jennifer J. Le Roy,a   Ilia Korobkov,a   David L. Bryceab  and  Muralee Murugesu*ab  

* Corresponding authors

a Department of Chemistry, University of Ottawa, 10 Marie Curie, Ottawa, ON, Canada
E-mail: m.murugesu@uottawa.ca
Fax: (+1) 613-562-5170
Tel: (+1) 613-562-5800x2733

b Centre for Catalysis Research and Innovation, 30 Marie-Curie, Ottawa, ON, Canada

Abstract

A tetralithio salt (1) derived by treating 1,4-bis(trimethylsilyl)-cyclooctatriene with nBuLi serves as the first structural evidence for a multi-alkali metallocene. Single-crystal XRD confirms two Li+ each asymmetrically bind to η3 and η4 between two COT′′ rings and two Li+ terminally bind to η3. Solid-state NMR studies confirm the presence of two distinct lithium ion sites while the solution NMR studies suggest the formation of an (COT′′ dianion) ion-pair in solution. Further treating of the tetralithio salt with NaCl leads to linear sodium polymeric chains. Therefore, simply changing the ionic radius changes the molecular structure.

Graphical abstract: First structural evidence for multiple alkali metals between sandwich decks in a metallocene

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Article information

DOI
https://doi.org/10.1039/C2DT30164D
Article type
Paper
Submitted
21 Jan 2012
Accepted
27 Feb 2012
First published
28 Feb 2012

Dalton Trans., 2012,41, 8060-8066

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First structural evidence for multiple alkali metals between sandwich decks in a metallocene

M. Jeletic, F. A. Perras, S. I. Gorelsky, J. J. Le Roy, I. Korobkov, D. L. Bryce and M. Murugesu, Dalton Trans., 2012, 41, 8060 DOI: 10.1039/C2DT30164D

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