Mononuclear formamidinate complexes of lithium and sodium

Cole, Marcus L., Davies, Aaron J., Jones, Cameron, and Junk, Peter C. (2011) Mononuclear formamidinate complexes of lithium and sodium. Zeitschrift fuer Anorganische und Allgemeine Chemie, 637 (1). pp. 50-55.

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Treatment of N,N′-bis(aryl)formamidines (FXylH = N,N′-bis(2,6-dimethylphenyl)formamidine, FEtH = N,N′-bis(2,6-diethylphenyl)formamidine, FisoH = N,N′-bis(2,6-diisopropylphenyl)formamidine) with nBuLi in the presence of tmeda (= N,N,N′,N′-tetramethylethylenediamine) led to deprotonation of the amidine affording [Li(FXyl)(tmeda)] (1), [Li(FEt)(tmeda)] (2) and [Li(Fiso)(tmeda)] (3) respectively. Similar treatment of FXylH and FisoH with [Na{N(SiMe3)2}] in THF and pmdeta (= N,N,N′,N″,N″-pentamethyldiethylenetriamine) yielded [Na(FXyl)(pmdeta)] (4) and [Na(Fiso)(pmdeta)] (5). All complexes were characterised by spectroscopy (NMR and IR) and X-ray crystallography. Due to the bulkiness of the formamidinate ligands and the multidentate nature of the supporting neutral amine ligands (tmeda and pmdeta), all compounds were mononuclear with η2-chelating formamidinate ligands in the solid state.

Item ID: 29666
Item Type: Article (Research - C1)
ISSN: 1521-3749
Keywords: lithium; sodium; formamidinates; metal amides; tmeda; pmdeta
Funders: Australian Research Council (ARC)
Projects and Grants: ARC LIEF Grant
Date Deposited: 02 Oct 2013 10:34
FoR Codes: 03 CHEMICAL SCIENCES > 0302 Inorganic Chemistry > 030204 Main Group Metal Chemistry @ 100%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970103 Expanding Knowledge in the Chemical Sciences @ 100%
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