Redox, Magnetic, and Structural Properties of 1,3,2-Dithiazolyl Radicals. A Case Study on the Ternary Heterocycle S<sub>3</sub>N<sub>5</sub>C<sub>4</sub>
作者:T. M. Barclay、A. W. Cordes、N. A. George、R. C. Haddon、M. E. Itkis、M. S. Mashuta、R. T. Oakley、G. W. Patenaude、R. W. Reed、J. F. Richardson、H. Zhang
DOI:10.1021/ja973338a
日期:1998.1.1
the heterocyclic radical 1,2,5-thiadiazolo[3,4-b]-1,3,2-dithiazolo[3,4-b]pyrazin-2-yl (TDP-DTA) is described. The compound is prepared by treatment of 5,6-dithiolo-1,2,5-thiadiazolo[3,4-b]pyrazine with S3N3Cl3 and purified by fractional sublimation in vacuo. The results of cyclic voltammetry and ESR analysis of TDP-DTA and related heterocyclic dithiazolyls indicate that the spin distributions and donor/acceptor
描述了杂环基团 1,2,5-噻二唑并[3,4-b]-1,3,2-二噻唑并[3,4-b]吡嗪-2-基(TDP-DTA)的表征。该化合物通过用 S3N3Cl3 处理 5,6-二硫醇-1,2,5-噻二唑并[3,4-b]吡嗪制备,并通过真空分级升华纯化。TDP-DTA 和相关杂环二噻唑基的循环伏安法和 ESR 分析结果表明,这些自由基的自旋分布和供体/受体性质对 4,5-取代基的性质极为敏感。TDP-DTA 的晶体结构已在两个温度下确定。在 293 K 时,晶体为三斜晶系,空间群 P1,a = 4.4456(8), b = 8.407(2), c = 9.671(3) A, α = 71.34(2), β = 89.28(2), γ = 87.80(2)°,Z = 2(对于 C4N5S3);在 150 K 时,晶体为三斜晶系,空间群 P1,a = 7.489(7),b = 9.593(4),c =