Synthesis,crystal structures and magnetic properties of two iron (II) tris(pyridyl)phosphine selenides complexes |
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| Authors: | Xuecheng Hu Tingquan Sun |
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| Institution: | 1. Hubei Collaborative Innovation Center for Rare Metal Chemistry, Hubei Key Laboratory of Pollutant Analysis and Reuse Technology, Institute for Advanced Materials, Hubei Normal University, Huangshi, P. R. China;2. Department of Chemistry, The School of Art and Science of Hubei Normal University, Huangshi, P. R. China |
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| Abstract: | We reported the synthesis of tris(pyridyl)phosphine selenide (TppSe) and tris(4-methylpyridin-2-yl)phosphine selenide (MeTppSe), which were prepared by a simple and straightforward one-pot method with red phosphorus in a KOH/DMSO suspension, and treatment of resulted phosphines with selenium in hot toluene. These compounds were characterized by mass spectroscopy, 1H, 13C and 31P NMR spectroscopies and the structure of MeTppSe was characterised by a single-crystal X-ray diffraction. Furthermore, The reactions of selenides with Fe(ClO4)2·6H2O afforded two new iron(II) mononuclear metal complexes Fe(TppSe)2]ClO4]2·3DMF (1) and Fe(MeTppSe)2]ClO4]2·2DMF (2). Detailed structural analyses and magnetic susceptibility measurements confirm no spin transition from low-spin to the high-spin state between 2 and 300 K in two iron(II) complexes. |
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| Keywords: | Selenide Iron(II) mononuclear metal complexes magnetic spin transition |
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