Jump to main content
Jump to site search

Issue 43, 2018
Previous Article Next Article

Cages on a plane: a structural matrix for molecular ‘sheets’

Author affiliations

Abstract

A family of heterometallic Anderson-type ‘wheels’ of general formula [MIII2MII5(hmp)12]4+ (MIII = Cr or Al and MII = Ni or Zn, Hhmp = 2-pyridinemethanol) has been extended to include MIII = Cr or Al and MII = Co, Fe, Mn or Cu, affording five new species of formulae [Cr2Co5(hmp)12](ClO4)4 (1), [Cr2Fe5(hmp)12](ClO4)4 (2), [Cr2Mn5(hmp)12](ClO4)4 (3), [Cr2Cu5(hmp)12](ClO4)2(NO3)2 (4) and [Al2Co5(hmp)12](ClO4)4 (5). As per previous family members, the metallic skeleton common to the cations of 1–5 describes a centred hexagon with the two MIII sites disordered around the outer wheel, with the exception of compound 4 where the CuII sites are localised. A structurally related, but enlarged planar disc possessing a [MIII6MII] hexagon capped on each edge by a CuII ion can be formed, but only when MIII = Al and MII = Cu. In [AlIII6CuII7(OH)12(hmp)12](ClO4)6(NO3)2 (6) the Anderson moiety contains a central, symmetry-imposed octahedral CuII ion surrounded by a wheel of AlIII ions. Solid-state dc susceptibility and magnetisation measurements reveal the presence of competing exchange interactions in 1–5, and very weak antiferromagnetic exchange between the CuII ions in 6 which may be intra- and/or intermolecular in nature.

Graphical abstract: Cages on a plane: a structural matrix for molecular ‘sheets’

Back to tab navigation

Supplementary files

Publication details

The article was received on 19 Sep 2018, accepted on 15 Oct 2018 and first published on 15 Oct 2018


Article type: Paper
DOI: 10.1039/C8DT03793K
Citation: Dalton Trans., 2018,47, 15530-15537
  • Open access: Creative Commons BY license
  •   Request permissions

    Cages on a plane: a structural matrix for molecular ‘sheets’

    H. W. L. Fraser, G. S. Nichol, A. Baldansuren, E. J. L. McInnes and E. K. Brechin, Dalton Trans., 2018, 47, 15530
    DOI: 10.1039/C8DT03793K

    This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements