Synthesis and spectroscopic characterization of fluorescent solid rare- earth complexes with hydroxamic acids
来源期刊：Rare Metals2002年第3期
论文作者：LI Yangsheng and LI FanFaculty of Chemistry and Materials Science, Nanchang University, Nanchang , China
文章页码：163 - 169
摘 要：<正>The complexes RE2（DHYA）3 nH2O in the title bar were synthesized through some reactions of trivalent rare-earth ions. In the process of synthesis, dihydroxamic acids were taken as ligands while the alcohol was taken as a solvent. The ligands included adipylhydroxamic acid （ADHA）, p-phthalichydroxamic acid （PPHA）, oxalohydroxamic acid （OXHA）, butadihydroxamic acid （BDHA）, o-phthalichydroxamic acid （OPHA）, benzoylhydroxamic acid （BHA）, etc. Measured at 25℃, the molar conductances in various modes are 13.00-21.05 S· cm2· mol-1, which shows that rare-earth complexes are nonelectrolytes and the hydroxarnino groups of the complexes have taken part in bonding. Infrared spectra, ultraviolet spectra, nuclear magnetic resonance （1HNMR） spectra, and fluorescence spectra were used to investigate the complexes. Experiments have proved that the complexes of Eu3+ and Tb3+ with aromatic hydroxamic acids have good fluorescent characteristics.
LI Yangsheng and LI FanFaculty of Chemistry and Materials Science, Nanchang University, Nanchang 200437, China
摘 要：<正>The complexes RE2（DHYA）3 nH2O in the title bar were synthesized through some reactions of trivalent rare-earth ions. In the process of synthesis, dihydroxamic acids were taken as ligands while the alcohol was taken as a solvent. The ligands included adipylhydroxamic acid （ADHA）, p-phthalichydroxamic acid （PPHA）, oxalohydroxamic acid （OXHA）, butadihydroxamic acid （BDHA）, o-phthalichydroxamic acid （OPHA）, benzoylhydroxamic acid （BHA）, etc. Measured at 25℃, the molar conductances in various modes are 13.00-21.05 S· cm2· mol-1, which shows that rare-earth complexes are nonelectrolytes and the hydroxarnino groups of the complexes have taken part in bonding. Infrared spectra, ultraviolet spectra, nuclear magnetic resonance （1HNMR） spectra, and fluorescence spectra were used to investigate the complexes. Experiments have proved that the complexes of Eu3+ and Tb3+ with aromatic hydroxamic acids have good fluorescent characteristics.
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