Unusual routes to complexes of binary alkali metal-non-metal compounds: Preparations and crystal and solution structures of Li2S 6·(tmeda)2 (tmeda=etramethylethylenediamine), and synthetic extensions of the routes

Arthur J. Banister, Donald Barr, Alan T. Brooker, William Clegg, Malcolm J. Cunnington, Michael J. Doyle, Simon R. Drake, Wendy R. Gill, Kenneth Manning, Paul R. Raithby, Ronald Snaith, Kenneth Wade, Dominic S. Wright

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The complex Li2S6·(tmeda)2 (tmeda = tetramethylethylenediamine) was obtained by reactions of BunLi solution or Li metal or LiH solid with S powder suspended in toluene containing tmeda, or by tmeda/toluene extraction of the product from reaction of LiBH 4 and S (1: 3 molar ratio) in tetrahydrofuran (thf): its crystal structure contains a central Li2S2 ring and there are alternating types of bond in the S62- residue; in donor solvents, this dianion cleaves to give the bright blue S3[graphic omitted] radical anion; several other complexes of type (MXy· xL)n have been prepared from reactions of alkali metals (M = Li, Na, K) with non-metals (X = S, Se, Te, P, As) in toluene containing stoicheiometric amounts of donors [L = hexamethylphosphoramide (hmpa), tmeda, pentamethyldiethylenetriamine (pmdeta)].

Original languageEnglish
Pages (from-to)105-107
Number of pages3
JournalJournal of the Chemical Society, Chemical Communications
Issue number2
Publication statusPublished - 1990

ASJC Scopus subject areas

  • Molecular Medicine

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