| Summary: | 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.
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