镨乙酰丙酮配合物宽波段光声光谱研究  

Study on Dihydrated Praseodymium Acetylacetonate by Photoacoustic Spectra with Broad Wavelength Range

作　　者：于锡娟[1] 伍荣护[1] 宋慧宇[1] 苏庆德[1] 

机构地区：[1]中国科学技术大学化学系,安徽合肥230026

出　　处：《中国稀土学报》2002年第4期374-377,共4页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金资助项目 (2 9875 0 2 6)

摘　　要：测量了宽波段范围 (紫外可见、近红外及中红外 )稀土乙酰丙酮 (aa)配合物的光声光谱 ,检测到了大部分Pr3+ 的f f跃迁谱峰 ,分析了Pr -O键性质 ,解释了谱峰分裂以及谱峰位移的原因。与传统的透射谱和吸收谱相比较 ,光声光谱具有检测快速、分辨率高以及可进行无损分析等优点 ,特别是对于稀土离子的f f跃迁的研究 。The UV Vis, NIR and MIR Photoacoustic Spectra of Pr(aa) 3·2H 2O were measured and most f f transition peaks of Pr 3+ were detected. The peak split and peak shift were studied. The covalency parameter was calculated and it turned out that the covalent bonds exist between Pr 3+ ions and ligands . The results show that photoacoustic spectroscopy offers a unique and complementary method in analysis of solid rare earth complexes. Compared with conventional FT IR transmission and absorption approaches, PAS has the advantages of fast, nondestructive analysis and high resolution.

关 键 词：镨 稀土 F-F跃迁 镨乙酰丙酮配合物 光声光谱 

分 类 号：O614.334[理学—无机化学] O433.59[理学—化学]