semithionine | 61988-43-0

• 分子结构分类: 有机化合物 - 有机杂环化合物
• 英文名称: semithionine
• 英文别名: 3,7-diamino-phenothiazin-10-yl
• CAS: 61988-43-0
• 化学式: C₁₂H₁₀N₃S
• 分子量: 228.297
• InChiKey: FHODXACIOPIQSL-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.88
• 重原子数：
  16.0
• 可旋转键数：
  0.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  66.14
• 氢给体数：
  2.0
• 氢受体数：
  3.0

反应信息

• 作为反应物：
  描述：

  semithionine 以 硫酸 为溶剂， 生成 7-亚氨基吩噻嗪-3-胺盐酸盐 、 leucothionine
  参考文献：
  名称：

  The Photoreduction of Thionine and Surfactant Thionine by Iron(II) in Anionic Micelles and Microemulsions

  摘要：

  AbstractThe rate constants for the iron(II)‐thionine and surfactant thionine system have been determined in aqueous solution, sodium dodecyl sulfate (SDS) micelles, and in a mineral oil‐in‐water microemulsion stabilized by sodium cetyl sulfate (SCS) and 1‐pentanol. The triplet lifetimes are all in the range 7–9 μs. The rate constant for electron transfer quenching of triplet thionine by iron(II) is higher in the anionic media due to a higher local Fe2+ concentration. However, the back reaction between semithionine and iron(III) is not similarly enhanced in the presence of micelles or microemulsion. The dismutation of semithionine is a little slower in microemulsion than in water, but over two orders of magnitude slower in SDS micelles. The quantum yield of thionine triplet formation, determined for surfactant thionine in SCS microemulsion, approaches unity.

  DOI：

  10.1002/bbpc.19850890513
• 作为产物：
  描述：

  leucothionine 在 铁粉 作用下， 以 硫酸 为溶剂， 生成 semithionine
  参考文献：
  名称：

  The Photoreduction of Thionine and Surfactant Thionine by Iron(II) in Anionic Micelles and Microemulsions

  摘要：

  AbstractThe rate constants for the iron(II)‐thionine and surfactant thionine system have been determined in aqueous solution, sodium dodecyl sulfate (SDS) micelles, and in a mineral oil‐in‐water microemulsion stabilized by sodium cetyl sulfate (SCS) and 1‐pentanol. The triplet lifetimes are all in the range 7–9 μs. The rate constant for electron transfer quenching of triplet thionine by iron(II) is higher in the anionic media due to a higher local Fe2+ concentration. However, the back reaction between semithionine and iron(III) is not similarly enhanced in the presence of micelles or microemulsion. The dismutation of semithionine is a little slower in microemulsion than in water, but over two orders of magnitude slower in SDS micelles. The quantum yield of thionine triplet formation, determined for surfactant thionine in SCS microemulsion, approaches unity.

  DOI：

  10.1002/bbpc.19850890513

文献信息

• Photoreduction of some dyes by styrene
  作者：Hans-Joachim Timpe、Steffen Neuenfeld

  DOI：10.1039/ft9928802329

  日期：——

  between 10–2 and 10–4 by excitation at their long-wavelength maximum in methanol solutions containing styrene (5 mol dm–3). The photoreduction of the dye safranine T by styrene has been investigated. The excited safranine T singlet undergoes and electron-transfer reaction with a rate constant of ksq= 5 × 107 dm3 mol–1 s–1 and an overall efficiency of ηel= 0.019. Three different experimental procedures (fluorescence

  一些含有杂原子的蒽染料与量子产率，Φ一个还原途径漂白出b，10之间-2和10 -4在它们的长波长最大在含有苯乙烯（5摩尔分米甲醇溶液中通过激励-3）。已经研究了染料番红花T被苯乙烯光还原。用的速率常数激发藏红T单线经历和电子转移反应ķ小号q = 5×10 7分米3摩尔-1小号-1和的总效率η EL= 0.019。三种不同的实验程序（荧光淬灭，三重峰态产率测定，Φ b测量）得到实验限度内相同的值。如通过短时技术所确定的，激发的三重态不与烯烃相互作用。在氧气的存在下，还有一条额外的氧化途径，涉及光还原过程的主要产物。的Φ b值取决于所使用的溶剂。已获得与Gutmann的供体数（DN）的相关性（-logΦ b = 0.030DN + 1.9）。半还原的藏红花T物种能够以k rm = 6×10 3 dm 3的速率常数加到苯乙烯双键上。mol –1 s –1引发该烯烃的自由基聚合。
• Guha, S. N.; Moorthy, P. N.; Rao, K. N., Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical and Analytical, 1982, vol. 21, # 5, p. 448 - 450
  作者：Guha, S. N.、Moorthy, P. N.、Rao, K. N.

  DOI：——

  日期：——