光谱学与光谱分析 |
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The UV Spectra of Heterocyclic Selenium Compounds and Metallic Ions in Ethanol Solutions |
ZHENG Wen-jie1,2,ZENG Xin-hua1,YANG Fang1,HE Hong-zhi1,BAI Yan1,LI Yi-qun1,GUO Bao-jiang2 |
1.Department of Chemistry, Ji′nan University, Guangzhou 510632, China 2.Biotech Research Institute, South China Normal University, Guangzhou 510631, China |
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Abstract The UV spectra of heterocyclic selenium compounds and metallic ions in ethanol solutions were investigated in this paper. Heterocyclic selenium compounds included 4,5-benzopiazselenole (BP), anthra [1, 2-c][1, 2, 5] selenadiazol-6, 11-dione(AS), piazselenole (PS), 5-methyl- piazselenole (MP), 4,6-diBr- piazselenole(DBP) and 4,4'-dipiazselenole (DP). Several important results were obtained: (1)The absorption wavelengths λ of piazselenoles were bathochromic and their ε increased with the increased conjugative effect; (2) Sn(Ⅳ)enhanced the UV absorption of piazselenoles at higher frequencies with the ratio of nSn(Ⅳ)/nPS at 1; (3) The UV absorption of BP was obviously enhanced by Sn(Ⅳ),Cd(Ⅱ),Cr(Ⅲ),Sb(Ⅲ),Fe(Ⅲ),Fe(Ⅱ)and Cu(Ⅱ), while Zn(Ⅱ)had little effect on the UV of BP;(4) The UV absorption of piazselenoles at higher frequencies was enhanced by Sn(Ⅳ),Cr(Ⅲ) and Sb(Ⅲ), and the peak of MP at 233 nm was blunt in MP-M solutions.
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Received: 2002-06-18
Accepted: 2002-12-18
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Corresponding Authors:
ZHENG Wen-jie
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Cite this article: |
ZHENG Wen-jie,ZENG Xin-hua,YANG Fang, et al. The UV Spectra of Heterocyclic Selenium Compounds and Metallic Ions in Ethanol Solutions [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(04): 470-473.
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URL: |
http://www.gpxygpfx.com/EN/Y2004/V24/I04/470 |
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