CAJ | 학술논문

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)o, 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.
통과사용이병희기삼알위결구도향제,재수열체계중합성출일례구유신형삼유개방골가결구적린산철화합물JU94(2H3O [Fe2P2O8(OH)2]).단정X사선연사분석결과현시,해화합물결정재단사정계P21/c공간군,정포삼수a=0.97566(5) nm, b=0.98560(5) nm, c=1.24514(5) nm,β=129.651(3)o, V=0.92189(8) nm3.해화합물적골가결구시유FeO6팔면체화PO4사면체련접구성,이사핵철족작위결구구축단원. JU94연[101],[101],[010]화[111]방향함유뉴곡팔원배공도,수분자분포우공도중.목사보이보연구결과표명,해결구구유2개정체학독립적정삼개철리자.자성연구결과표명,해물질구유반철자성.
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.