Synthetic Study on New Metal Complexes for Molecular Magnetism Basedon Magnetic Anisotropies

利用各种有机配体，合成了铜、镍、锰、铁、钴、钌、钼、铑等第一和第二过渡金属的新的单核、双核、寡核和多核金属配合物，并研究了它们的磁性能，观察了磁性各向异性效应。在钴体系中，应用极化中子衍射方法分析了双核配合物的各向异性对磁性能的影响。在镍体系中，七核镍配合物表现为单分子磁性，而六核镍配合物表现为铁磁性。在含金属-金属键合的双核钌体系中，发现了居里温度为50 K的铁磁性化合物。通过引入长烷基链，观察了紧固件对磁性能和液晶性能的影响。在铑和钼的一维链化合物中，研究了其对氮气的吸附性能、磁性能以及与晶体结构的相关性。还合成了双核镧系化合物，并用J量子数近似描述了其磁性能。

By the use of various organic ligands, new mononuclear, dinuclear, oligonuclear, and polynuclear metal complexes of the first and second transition metals such as copper, nickel, manganese, iron, cobalt, ruthenium, molybdenum, and rhodium were synthesized, and their magnetic properties were investigated to observe the magnetic anisotropy effect. In cobalt systems, polarized neutron diffraction method was applied for dinuclear complex to elucidate the anisotropic effect on the magnetic properties. In nickel systems, heptanuclear nickel complex showed a single-molecule-magnet behavior, while hexanuclear nickel complex showed a ferromagnetic behavior. In dinuclear ruthenium systems containing metal-metal bonding, a ferromagnetic compound with Curie temperature of 50 K was found. Fastener effect on magnetic properties as well as liquid-crystalline property were observed by introduction of long alkyl chains. In one-dimensional chain compounds of rhodium and molybdenum, adsorption properties were examined for nitrogen gas as well as magnetic properties and the correlation with the crystal structures were investigated. Dinuclear lanthanide compounds were also synthesized and the magnetic properties were described by the J quantum numbers,approximately.