Selective crystallization of di-sec-butylmagnesium. N,N,N',N'-tetramethylethylenediamine from solutions containing mixtures of normal-butyl and secondary-butyl isomers

N.D.R. Barnett, W. Clegg, Robert Mulvey, P.A. O'Neil, D. Reed

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Found to crystallise selectively from treatment of commercial (s)Bu((n)Bu)Mg solutions with N,N,N',N'-tetramethylethylenediamine (TMEDA), the complex ((s)Bu(2)Mg . TMEDA) is mononuclear in the crystal state and undergoes a solvation-desolvation equilibrium in arene solution. The crystal structure is noteworthy for the large C-Mg-C bond angle of 133.6(2)degrees, attributable to the branched nature of the alkyl substituents. This angular distortion is thought to encourage the partial loss of TMEDA from Mg centres in solution.

Original languageEnglish
Pages (from-to)297-300
Number of pages4
JournalJournal of Organometallic Chemistry
Volume510
Issue number1-2
DOIs
Publication statusPublished - 21 Mar 1996

Keywords

  • magnesium
  • sec butyl
  • crystal structure
  • nuclear magnetic resonance
  • organomagnesium
  • RAY

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