Study Of Cyano-bridged Zero-dimensional Polynuclear Magnet

Most countries in the world have made it a point to the information industry since the beginning of this century, The life of people have closely related to its development, and the indispensable data storage technology of information industry has been greatly appreciated by the scientists from all over the world. Magnetic materials and related compounds are important mediators of storage technology, the traditional magnetic materials has been difficult to meet the needs, so we begin to pay close attention to the new molecular magnets with magnetism physical characteristics. Cyano-bridged Zero-dimensional polynuclear magnet have unique features, such as large spin, anisotropy, strong magnetic coupling and so on. Nature of the magnetic exchange between different metal ions can help us to predict the structure and property of compounds, in order to improve the magnetic storage density of magnetic materials. So Cyano-bridged Zero-dimensional polynuclear magnet have the opportunity to apply in quantum computers and high-density information storage, etc. Along this line, this thesis includes several aspects as follows.We design and synthesis four kinds of building blocks:[Fe(pzTp)(CN)3]-[Fe(Tp)(CN)3r]、[Fe(pcq)(CN)3]-and [Fe(Tp*)(CN)3]-.Then choose three kinds of neutral secondary ligand:2,2’-Dipyridyl,2,2’-Bipyrimidine and1,4-bis(1-imidazol)benzene, both building blocks and neutral secondary ligand self-assmble with metal ions (Cu2+, Co2+, Mn2+) through the methods of coordination chemistry and molecular engineering. Using cyanide with strong magnetic effect passing ability of as a bridging ligands. We get four Cyano-bridged Zero-dimensional comprounds. Then all of the four comprounds have been characterized structurally and magnetically.Crystal analysis indicated that compround1is a binuclear compround, coumprounds2-4are trinuclear compounds. Comprounds1and2are monoclinic P2(1)/n space group. Compround3is monoclinic C2/c space group. Compround4is triclinic C2/c space group. Magnetic measurements indicated that compound lexhibited intramolecular ferrimagnetism coupling, compounds2-4exhibited weak ferromagnetic coupling.