开放骨架磷酸铁的合成与性质  

Synthesis and Characterization of a New Open-framework Iron Phosphate

作　　者：王艳艳[1] 张铮 孙延俊[1] 李激扬[1] 

机构地区：[1]吉林大学化学学院,无机合成与制备化学国家重点实验室,长春130012 [2]Chemical Reaction Engineering Group,Institute of Technology and Management,University of Groningen,Groningen 9747AG,The Netherlands

出　　处：《高等学校化学学报》2014年第3期449-454,共6页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:21271081);国家“九七三”计划项目(批准号:2011CB808703)资助~~

摘　　要：通过使用二丙烯基三胺为结构导向剂,在水热体系中合成出一例具有新型三维开放骨架结构的磷酸铁化合物JU94(2H3O[Fe2P2O8(OH)2]).单晶X射线衍射分析结果显示,该化合物结晶在单斜晶系P21/c空间群,晶胞参数a=0.97566(5)nm,b=0.98560(5)nm,c=1.24514(5)nm,β=129.651(3)°,V=0.92189(8)nm3.该化合物的骨架结构是由FeO6八面体和PO4四面体连接构成,以四核铁簇作为结构构筑单元.JU94沿[101],[101],[010]和[111]方向含有扭曲八元环孔道,水分子分布于孔道中.穆斯堡尔谱研究结果表明,该结构具有2个晶体学独立的正三价铁离子.磁性研究结果表明,该物质具有反铁磁性.Synthesis of novel iron phosphates has gained much attention due to their structure diversity and unique magnetic property. In this work, a new iron phosphate JU94（ 2H3O [Fe2P2O8（OH）2]） with novel three-dimensional open framework has been hydrothermally synthesized using dipropylenetriamine as the structure-directing agent（ SDA） . Its structure was determined by single-crystal X-ray diffraction. It crystallizes in monoclinics pace group, P21/c, with a=0.97566（5） nm, b=0.98560（5） nm, c=1.24514（5） nm,β=129.651（3）o, V=0.92189（8） nm3. The framework structure is made of tetranuclear iron-oxygen clusters as building unit formed by connection of FeO6 and PO4 polyhedra, which contains intersecting 8-ring channels along the [101], [101], [010] and [111] directions. Water molecules are occluded in the free space of channels. M？ssbauer analysis shows that there are two types of Fe atoms in the framework, and they are both trivalent. Magnetic measurement shows anti-ferromagnetic ordering of JU94 at room temperature.

关 键 词：磷酸铁 开放骨架 水热合成 反铁磁性 

分 类 号：O614[理学—无机化学]