Jump to main content
Jump to site search

Issue 45, 2019
Previous Article Next Article

Mechanistic insights of anionic ligand exchange and fullerene reduction with magnesium(i) compounds

Author affiliations

Abstract

Ligand exchange reactions between combinations of the complexes [{(Arnacnac)Mg}2], where Ar = 2,6-iPr2C6H3 (Dip), 2,6-Et2C6H3 (Dep), 2,4,6-Me4C6H2 (Mes), and 2,6-Me2C6H3 (Xyl), [({Ph2P(NDip)2}Mg)2], [(Arnacnac)Li], where Ar = Mes or Xyl, and [{Ph2P(NDip)2}Li] were studied in deuterated aromatic and aliphatic solvents, and tetrahydrofuran. The reactions afforded product mixtures with asymmetrically substituted dimagnesium(I) complexes [(Arnacnac)MgMg(Ar′nacnac)], where Ar, Ar′ = Dip, Dep, Mes, Xyl and [{Ph2P(NDip)2}MgMg(Arnacnac)], where Ar = Mes or Xyl, and suggest that the exchange of anionic ligands on the Mg22+ ion proceeds via an associative mechanism and is strongly dependent on ligand sterics and ligand shape, and can be very rapid. The activation reaction of fullerene C60 by dimagnesium(I) complexes [{(Arnacnac)Mg}2] and [({Ph2P(NDip)2}Mg)2] to fulleride complexes is similarly dependent on ligand sterics and ligand shape, but likely does not involve direct coordination of the fullerene to the Mg centre in dimagnesium(I) compounds prior to its reduction. The new C606− fulleride complex [({Ph2P(NDip)2}Mg)6C60] was prepared, and spectroscopically and structurally characterised.

Graphical abstract: Mechanistic insights of anionic ligand exchange and fullerene reduction with magnesium(i) compounds

Back to tab navigation

Supplementary files

Publication details

The article was received on 09 Oct 2019, accepted on 29 Oct 2019 and first published on 29 Oct 2019


Article type: Paper
DOI: 10.1039/C9DT03976G
Dalton Trans., 2019,48, 16936-16942

  •   Request permissions

    Mechanistic insights of anionic ligand exchange and fullerene reduction with magnesium(I) compounds

    S. R. Lawrence, D. B. Cordes, A. M. Z. Slawin and A. Stasch, Dalton Trans., 2019, 48, 16936
    DOI: 10.1039/C9DT03976G

Search articles by author

Spotlight

Advertisements