Ferromagnetic interaction between [Ni(bdt)2]? anions in [Mn2(Saloph)2(μ-OH)][Ni(bdt)2](CH3CN)2 |
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| Authors: | Junichi Nishijo Shigenori Numao Ken Judai Nobuyuki Nishi |
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| Institution: | Department of Materials Molecular Science, Institute for Molecular Science, 38 Nishigo-Naka, Myodaiji, Okazaki 444-8585, Japan;Department of Chemistry, University of Florida, Gainesville, FL, USA |
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| Abstract: | A new molecule-based magnetic material Mn2(Saloph)2(μ-OH)]Ni(bdt)2](CH3CN)2 was prepared by the metathesis of Mn(Saloph)(H2O)(ClO4)] (S = 2) and TBANi(bdt)2] (S = 1/2). In the crystal, Ni(bdt)2]? anions form square lattices which are separated from each other by the layers of antiferromagnetically coupled binuclear cations Mn2(Saloph)2(μ-OH)]+. The magnetic susceptibility of the material coincides with the sum of the S = 2 van Vleck dimer model and S = 1/2 Heisenberg ferromagnetic square lattice model with 2J = ?92.4 and +4.5 K, respectively. The origin of the ferromagnetic interaction can be explained by the T-shaped intermolecular overlap mode of SOMOs which spreads to the ends of Ni(bdt)2]? molecules. |
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