Synthesis Of Crystals And Property Research Of Iron Phosphates With Open-framework

Inorganic microporous materials have popular application in catalysis, adsorption, ion-exchange, separation and host-guest assemblies due to their unique pore architectures. And the rational design and synthesis of new microporous comld for the microporous compounds. spounds, as well as the development of new synthetic ways are becoming the topics of microporous chemistry. In the last decade, the synthesis of new materials that might combine the nanoporosity of zeolites with the magnetic and optical properties, electronic conductivity and ferrodlectricity of transition metal phosphates such as TiPOs, VPOs, FePOs, ZnPOs and CoPOs have been reported in the literature. Many of these materials exhibit unique structures and may have potential applications in catalysis and magnetic field. In addition to phosphates, open framework metal arsenates, phosphite, selenite, germinates, sulfates and carbonate have also been reported in the literature. The successful syntheses of these new compounds with open-framework open a new fieThe goal of this work is to synthesis and preparation of ironophosphates continuously and systematically by hydrothermal route . And also to explore the synthesis of transition metal, especial nickel sulfates templated by organic amine hydrothermally. A new organically templated iron(II) phosphatooxalate, (N2C4H12)[Fe4 -(C2O4)3(HPO4)2(H2O)2], have been synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction. a new open-framework iron phosphatooxlate has been synthesized hydrothermally in the presence of a structure-directing amine. The 3-D architecture of the title compound contain Fe2O10 dimeFePO-bipy are also protracted. The synthesis of these two compounds provided the into the Fe-O-P system, a new two-dimensional layer mixed-valence iron fluorophosphates, (C4N2H11)2[Fe4IIIFeIIF4(OH)2(PO4)2-(HPO4)2(H2O)2], has been synthesized hydrothermally using piperazine as structural directional agent. It was characterized by XRD, IR, TG-DTA, CHN and ICP analysis. M?ssbaur spectrum confirm the mixed valence nature of iron ion of the compound. Magnetic susceptibility studies on powdered single crystal indicates the rs and PO4 moieties connected with each other to form infinite chains, which are linked via oxalate units made use of bisbidentate, bismono-and bisbidentate ligand to form a 3-D structure. Such a dual role of the oxalate unit is noteworthy. The magnetic behavior indicates the presence of antiferromagnetic interactions. It would be worthwhile to explore the possibility of introducing other magnetic components to the iron phosphatooxalate framework, in order to obtain materials with novel magnetic properties. During the attempt to prepare new hybride iron phosphates, two new one-dimensional ladder-like chain FePO-phen and FePO-bipy have been synthesized hydrothermally by using 1,10-phenanthroline and 2,2'-bipyridyl as organic ligand. Factor such as initial amine/FeO and P2O5/FeO molar ratios which dominate the product are discussed. The crystallization fields of phases FePO-phen andpossibility of preparing iron-containing inorganic-organic hybrid materials in a wide rang of systems. It also would be of interest to investigate the role of the amines in the formation of open-framework structures more closely and explore other structures where the amine plays different roles. Introducing hydrofluoric acid...