Jump to main content
Jump to site search

Issue 14, 2008
Previous Article Next Article

Characterization and reactivity of peralkylated LnIIAlIII heterobimetallic complexes

Author affiliations

Abstract

The heterobimetallic peralkylated complexes [Ln(AlR4)2]n (Ln = Sm, Yb; R = Me, Et) were synthesized by a silylamide elimination route from Ln[N(SiMe3)2]2(THF)2 and an excess of AlR3. The solid-state structure of [Sm(AlEt4)2]n is isomorphous to that of the ytterbium derivative. Polymeric [Yb(AlMe4)2]n was examined by 1H and 13C MAS NMR spectroscopy revealing the presence of distinct bridging methyl groups. The reaction of [Yb(AlMe4)2]n and 1,10-phenanthroline (Phen) afforded the monomeric donor adduct Yb(AlMe4)2(Phen), while the protonolysis reaction with 2 equiv. C5Me5H (HCp*) yielded a separated ion pair of composition [Cp*Yb(THF)4][AlMe4]. Single-crystal X-ray diffraction data are provided for both ytterbium(II) complexes. Solid-state magnetic measurements (SQUID) were performed on [Sm(AlMe4)2]n, [Sm(AlEt4)2]n, SmI2(THF)2 and Sm[N(SiMe3)2]2(THF)2 showing high effective magnetic moments 3.67µB < µeff < 4.43µB.

Graphical abstract: Characterization and reactivity of peralkylated LnIIAlIII heterobimetallic complexes

Back to tab navigation

Supplementary files

Publication details

The article was received on 30 Oct 2007, accepted on 15 Jan 2008 and first published on 26 Feb 2008


Article type: Paper
DOI: 10.1039/B716603F
Citation: Dalton Trans., 2008,0, 1899-1907
  •   Request permissions

    Characterization and reactivity of peralkylated LnIIAlIII heterobimetallic complexes

    H. Sommerfeldt, C. Meermann, M. G. Schrems, K. W. Törnroos, N. Å. Frøystein, R. J. Miller, E. Scheidt, W. Scherer and R. Anwander, Dalton Trans., 2008, 0, 1899
    DOI: 10.1039/B716603F

Search articles by author

Spotlight

Advertisements