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

来源 :Chemical Research in Chinese Universities | 被引量 : 0次 | 上传用户:liongliong479
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A new manganese(II) phosphite,Mn 2 F2(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) nm 3,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. A new manganese (II) phosphite, Mn2 F2 (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 analyzes 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) nm 3, Z = 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 ° C.Magnetic measurement indicates that compound 1 exhibits the global antiferromagnetic interactions with a ferromagnetic transition at 28 K.
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