The Preparation and Magnetic Studies Metal Complexes with Nitronyl Nitronyl Ligand

• Main Authors: Hong-Yue Weng, 翁宏岳
• Other Authors: Ho-Hsiang Wei
• Format: Others
• Language: zh-TW
• Published: 1995
• Online Access: http://ndltd.ncl.edu.tw/handle/44172688795344560054

碩士 === 淡江大學 === 化學學系 === 83 === The magnetic properties of the metal complexes are most originated from the electronic spin ststes of the metal ions.We can predict the different magnetic properties from the complexes through the moleculars. In present thesis,the organic radical,NITpPy,reacts with different metal complexes of acetylacetonates,hexafluoac- etylacetonates and chlorides. We hope to get ferromagnetic molecular-base materials with strong inter- or intramolecular interaction and high critical transition temperture by changing the spin states of the metal centers. The complexes of this series of susceptibilities,IR, ESR spectra and crystal structure determinations for the organic radical ,NITpPy,and its derivatives are discussed. The results reveal that all the complexes with paramagnetic or diamagnetic metals are very weak antiferromagnetic interaction exception of the NITpPy ligand(is intermolecular ferromagnetic interaction and it critical temperture is 11K).The interaction parameter of J values have been estimated by theoretical curve fitting.