Attempting to understand (and control) the relationship between structure and magnetism in an extended family of Mn6 single-molecule magnets

Ross Inglis; Leigh F. Jones; Constantinos J. Milios; Saiti Datta; Anna Collins; Simon Parsons; Wolfgang Wernsdorfer; Stephen Hill; Spyros P. Perlepes; Stergios Piligkos; Euan K. Brechin

doi:10.1039/B822235E

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Dalton Transactions

Issue 18, 2009

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Attempting to understand (and control) the relationship between structure and magnetism in an extended family of Mn₆ single-molecule magnets

Ross Inglis , Leigh F. Jones , Constantinos J. Milios , Saiti Datta , Anna Collins , Simon Parsons , Wolfgang Wernsdorfer , Stephen Hill , Spyros P. Perlepes , Stergios Piligkos and Euan K. Brechin

Dalton Trans., 2009, 3403-3412

DOI: 10.1039/B822235E
Received 10 Dec 2008, Accepted 23 Feb 2009
First published on the web 17 Mar 2009

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Abstract
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The synthesis and characterisation of a large family of hexametallic [Mn^III₆] Single-Molecule Magnets of general formula [Mn^III₆O₂(R-sao)₆(X)₂(sol)_4–6] (where R = H, Me, Et; X = ⁻O₂CR′ (R′ = H, Me, Ph etc) or Hal⁻; sol = EtOH, MeOH and/or H₂O) are presented. We show how deliberate structural distortions of the [Mn₃O] trinuclear moieties within the [Mn₆] complexes are used to tune their magnetic properties. These findings highlight a qualitative magneto-structural correlation whereby the type (anti- or ferromagnetic) of each Mn₂ pairwise magnetic exchange is dominated by the magnitude of each individual Mn-N-O-Mn torsion angle. The observation of magneto-structural correlations on such large polymetallic complexes is rare and represents one of the largest studies of this kind.

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Attempting to understand (and control) the relationship between structure and magnetism in an extended family of Mn₆ single-molecule magnets

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