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Synthesis and magnetic properties of trinuclear chromium(III)palladium(II)-chromium(III) complexes bridged by extended dioximato groups

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Heterotrinuclear CrIII-PdII-CrIII complexes of formulae [Cr(salen)-Pd(dmg)2-Cr(salen)]·H2O (1), [Cr(salen)-Pd(α-BD) 2-Cr(salen)]·H2O (2) and [Cr(salen)-Pd(α-FD) 2-Cr(salen)]·2H2O (3) [dmg2- =dimethyl-glyoximato, (α-BD)2/2- = α-benzyldioximato, (α-FD)2/2- = α-furildioximato and salen2− = N,N′-ethylenebis(salicylideneiminate)] have been prepared and characterized by elemental analysis, i.r. and electronic spectroscopies, and molar conductances. These complexes are thought to contain extended diomixato bridges. The magnetic properties of complex (1) has been investigated over the 80–300 K range and corresponds to what is expected for an antiferromagnetic CrIII-CrIIIi pair with S Cr = 3/2 and S Pd = 0 (Pd2+ is a diamagnetic in a square-planar environment) local spins. The exchange integral (J) was evaluated as -3.38cm−1 using the spin Hamiltonians Ĥ = -2JŜ A Ŝ B(S A = S B = 3/2).

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Authors and Affiliations

  1. Department of Chemistry, Nankai University, 300071, Tianjin, P. R. China

    Si-Wei Zhang, Dai-Zheng Liao, Zong-Hui Jiang & Geng-Lin Wang

  2. State Key Laboratory of Coordination Chemistry, N anfing University, 210008, Nanjing, P. R. China

    Si-Wei Zhang, Dai-Zheng Liao, Zong-Hui Jiang & Geng-Lin Wang

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  1. Si-Wei Zhang
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  2. Dai-Zheng Liao
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Zhang, SW., Liao, DZ., Jiang, ZH. et al. Synthesis and magnetic properties of trinuclear chromium(III)palladium(II)-chromium(III) complexes bridged by extended dioximato groups. Transition Met Chem 21, 166–168 (1996). https://doi.org/10.1007/BF00136549

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  • DOI: https://doi.org/10.1007/BF00136549

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