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

作　　者：ZHANG Hua WANG Li-ping SHI Su-hua HUANG Liang-liang WANG Li 

机构地区：[1]College of Chemistry,Jilin University,Changchun 130012,P.R.China [2]Nanjing Center,China Geological Survey,Nanjing 210016,P.R.China

出　　处：《Chemical Research in Chinese Universities》2012年第4期563-566,共4页高等学校化学研究（英文版）

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)

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.

关 键 词：Manganese phosphite 3D Framework Magnetic property 

分 类 号：O657.31[理学—分析化学] TQ314.249[理学—化学]