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