title: [The UV spectra of heterocyclic selenium compounds and metallic ions in ethanol solutions].
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 wavelengthslambda of piazselenoles were bathochromic and their epsilon 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.
authors.affiliation: Department of Chemistry, Ji'nan University, Guangzhou 510632, China.
authors.forename: Wen-jie
authors.initials: WJ
authors.lastname: Zheng
authors.forename: Xin-hua
authors.initials: XH
authors.lastname: Zeng
authors.forename: Fang
authors.initials: F
authors.lastname: Yang
authors.forename: Hong-zhi
authors.initials: HZ
authors.lastname: He
authors.forename: Yan
authors.initials: Y
authors.lastname: Bai
authors.forename: Yi-qun
authors.initials: YQ
authors.lastname: Li
authors.forename: Bao-jiang
authors.initials: BJ
authors.lastname: Guo
mesh_terms: D000965:Antimony / Q000737:chemistry; D002857:Chromium / Q000737:chemistry; D003300:Copper / Q000737:chemistry; D018360:Crystallography, X-Ray / Q000379:methods; D004304:Dosage Forms; D000431:Ethanol / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry*; D007501:Iron / Q000737:chemistry; D008956:Models, Chemical; D015394:Molecular Structure; D018036:Selenium Compounds / Q000737:chemistry*; D012996:Solutions / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet / Q000379:methods* / Q000662:veterinary; D013324:Strontium / Q000737:chemistry; D015032:Zinc / Q000737:chemistry
chemical_list: D004304:Dosage Forms; D005290:Ferric Compounds; D018036:Selenium Compounds; D012996:Solutions; D002857:Chromium; D000431:Ethanol; D003300:Copper; D000965:Antimony; D007501:Iron; D015032:Zinc; D013324:Strontium