Transannular Se–Se Interaction in Electrochemical Oxidation of 5<i>H</i>,7<i>H</i>-Dibenzo[<i>b</i>,<i>g</i>][1,5]diselenocin and Formation of Its Diselena Dication in Concentrated Sulfuric Acid
5H,7H-Dibenzo[b,g][1,5]diselenocin (1) undergoes the reversible electrochemical oxidation with low oxidation potential which is attributed to the transannular Se–Se interaction. The formation of diselena dication of 1 was observed in the reaction of 1 and its Se-oxide with concd H2SO4 by 1H, 13C, and 77Se NMR spectroscopy.
Synthesis of 5H,7H-dibenzo[b,g][1,5]selenoxocine from a selenonium salt of 5H,7H-dibenzo[b,g][1,5]diselenocine and first X-ray evidence for the transannular oxygen-selenium interaction
A new heterocyclic compound, 5H,7H-dibenzo[b,g][1,5]selenoxocine (1), has been prepared from the benzylic selenonium salt of 5H,7H-dibenzo[b,g][1,5]diselenocine. Treatment of the selenoxide of 1 with acetylenedicarboxylate gave the stable selenonium ylide (4); the X-ray structure of 4 shows the strong transannular contact between oxygen and seleniumatoms.
Synthesis of selenylfullerene with selenium-containing dibenzo[b,g]cyclooctane moiety
作者:Tsukasa Nakahodo、Kensaku Takahashi、Midori O. Ishitsuka、Takahiro Tsuchiya、Yutaka Maeda、Hisashi Fujihara、Shigeru Nagase、Takeshi Akasaka
DOI:10.1016/j.tetlet.2008.02.017
日期:2008.3
The photochemical reaction of C60 with selenium-containing bicyclooctanes affords for the first time the selenylfullerenes. The derivatives were characterized by mass, UV–vis absorption, NMR spectroscopy, and X-ray crystallographic analysis.
C 60与含硒的双环辛烷的光化学反应首次提供了硒基富勒烯。通过质量,紫外可见吸收,NMR光谱和X射线晶体学分析对衍生物进行了表征。
Preparation, Characterization, and Electrochemical Properties of Selenylfullerenes
作者:Tsukasa Nakahodo、Kensaku Takahashi、Midori O. Ishitsuka、Takahiro Tsuchiya、Yutaka Maeda、Hisashi Fujihara、Shigeru Nagase、Takeshi Akasaka
DOI:10.1080/10426500902947864
日期:2009.6.23
The photochemical reaction of C(60) with selenium-containing bicyclooctanes affords for the first time the selenylfullerenes, which were characterized by mass, UV-vis absorption, and NMR spectroscopic and X-ray crystallographic analyses.