CRCU

Chemical Research in Chinese Universities ›› 2012, Vol. 28 ›› Issue (4): 563-566.

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Synthesis, Characterization and Magnetic Properties of a New Manganese(II) Phosphite

ZHANG Hua1,2, WANG Li-ping1, SHI Su-hua1, HUANG Liang-liang1, WANG Li 1   

  1. 1. College of Chemistry, Jilin University, Changchun 130012, P. R. China;
    2. Nanjing Center, China Geological Survey, Nanjing 210016, P. R. China
  • Received:2011-09-13 Revised:2011-11-03 Online:2012-07-25 Published:2012-07-25
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.20901028) and the Fundamental Research Funds for the Central Universities of China(No.201103099).

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Abstract: A new manganese(II) phosphite, Mn2F2(HPO3)(1), was synthesized with tetraethylene pentamine as structure directing agent under hydrothermal conditions. The as-synthesized product was characterized by single crystal X-ray diffraction, powder X-ray diffraction, infrared(IR), UV-Vis spectrum, thermogravimetric analysis(TGA), inductive coupled plasma-atomic emission spectroscopy(ICP-AES), elemental analyses and magnetic susceptibility measurement. Single crystal X-ray diffraction analysis reveals that compound 1 crystallized in the orthorhombic space group Pnma, with a=0.75667(15) nm, b=1.0247(2) nm, c=0.55432(11) nm, V=0.42980(15) nm3, Z=4. The 3D compact framework of compound 1 was built up by the Mn2O6F4 dimers and HPO3 pseudo-pyramids. Compound 1, a new metal-rich manganese phosphite, shows a high thermal stability limit of 550℃. Magnetic measurement indicates that compound 1 exhibits the global antiferromagnetic interactions with a ferromagnetic transition at 28 K.

Key words: Manganese phosphite, 3D Framework, Magnetic property