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Synthetic and structural investigations of alkali metal diamine bis(phenolate) complexes

Lookup NU author(s): Emeritus Professor Bill Clegg, Dr Luca Russo

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Abstract

Two lithium and one sodium diamine bis(phenolate) complexes have been prepared and characterised by X-ray crystallography and NMR spectroscopy. Two parent diamine bis(phenol) ligands were utilised in the study (1-H2 and 2-H2). Dimeric (1-Li2)2 was prepared by treating 1-H2 with two molar equivalents of n-butyllithium in hydrocarbon solvent. It adopts a ladder-like structure in the solid state, which appears to deaggregate in C6D6 solution. The monomeric (hence, dinuclear) TMEDA-solvated species [2-Li2•(TMEDA)] has two chemically unique Li atoms in the solid state and is prepared by reacting 2-H2 with two molar equivalents of n-butyllithium in hydrocarbon solvent, in the presence of N,N,N′,N′-tetramethylethylenediamine (TMEDA). Finally, the dimeric sodium-based [2-Na2•(OEt 2)]2 was prepared by reacting 2-H2 with two molar equivalents of freshly prepared n-butylsodium in a hydrocarbon-diethyl ether medium. The complex adopts a Na4O4 cuboidal structure in the solid state, which appears to remain intact in C 6D6 solution. © The Royal Society of Chemistry.


Publication metadata

Author(s): Clegg W, Davidson MG, Graham DV, Griffen G, Jones MD, Kennedy AR, O'Hara CT, Russo L, Thomson CM

Publication type: Article

Publication status: Published

Journal: Dalton Transactions

Year: 2008

Issue: 10

Pages: 1295-1301

Print publication date: 01/01/2008

ISSN (print): 1477-9226

ISSN (electronic): 1477-9234

Publisher: Royal Society of Chemistry

URL: http://dx.doi.org/10.1039/b718186h

DOI: 10.1039/b718186h


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