Attempting to understand (and control) the relationship between structure and magnetism in an extended family of Mn(6) single-molecule magnets

TY - JOUR

T1 - Attempting to understand (and control) the relationship between structure and magnetism in an extended family of Mn(6) single-molecule magnets

AU - Inglis, Ross

AU - Jones, Leigh F

AU - Milios, Constantinos J

AU - Datta, Saiti

AU - Collins, Anna

AU - Parsons, Simon

AU - Wernsdorfer, Wolfgang

AU - Hill, Stephen

AU - Perlepes, Spyros P

AU - Piligkos, Stergios

AU - Brechin, Euan K

PY - 2009

Y1 - 2009

N2 - The synthesis and characterisation of a large family of hexametallic [Mn(III)(6)] Single-Molecule Magnets of general formula [Mn(III)(6)O(2)(R-sao)(6)(X)(2)(sol)(4-6)] (where R = H, Me, Et; X = (-)O(2)CR' (R' = H, Me, Ph etc) or Hal(-); sol = EtOH, MeOH and/or H(2)O) are presented. We show how deliberate structural distortions of the [Mn(3)O] trinuclear moieties within the [Mn(6)] complexes are used to tune their magnetic properties. These findings highlight a qualitative magneto-structural correlation whereby the type (anti- or ferromagnetic) of each Mn(2) 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.

AB - The synthesis and characterisation of a large family of hexametallic [Mn(III)(6)] Single-Molecule Magnets of general formula [Mn(III)(6)O(2)(R-sao)(6)(X)(2)(sol)(4-6)] (where R = H, Me, Et; X = (-)O(2)CR' (R' = H, Me, Ph etc) or Hal(-); sol = EtOH, MeOH and/or H(2)O) are presented. We show how deliberate structural distortions of the [Mn(3)O] trinuclear moieties within the [Mn(6)] complexes are used to tune their magnetic properties. These findings highlight a qualitative magneto-structural correlation whereby the type (anti- or ferromagnetic) of each Mn(2) 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.

U2 - 10.1039/b822235e

DO - 10.1039/b822235e

M3 - Journal article

C2 - 19381403

SN - 1477-9226

SP - 3403

EP - 3412

JO - Dalton Transactions (Print Edition)

JF - Dalton Transactions (Print Edition)

IS - 18

ER -