Synthesis and Recylization of 2,3,9,10-Tetrahydro-8H-[1,4]Dioxino[2,3-f]-[1,3]Thiazino[3,2-a]Benzimidazolium Salts
摘要:
A series of [1,3]thiazino[3,2-a]benzimidazolium salts modified in the benzene ring by a condensed 1,4-dioxane ring has been prepared. Reaction with epichlorohydrin occurs with recyclization to form derivatives of 3-(2,3-epithiopropyl)benzimidazol-2-one.
通过在铜I和铜II络合物对之间的结构协调(“ entent state”模型),实现了蓝色铜蛋白中快速有效的电子转移。在这里,我们现在展示具有氧化还原活性胍配体的Cu I / Cu II复合物对,显示两种氧化还原状态之间几乎完美的匹配。通过改变配体电子给体的强度,可以控制铜络合物的氧化还原化学反应,使其以金属为中心或越过边界以配体为中心。这项工作是对具有氧化还原活性配体的复合物进行的第一个系统研究,涉及的是焓状态。
Redox-isomeric coordination compounds, in which the magnetic and optical properties could be varied by a stimulated intramolecular electron transfer between the metal and a redox-active ligand, are of interest for several applications in catalysis and materials science. In this work, the redox chemistry of cobalt complexes with redox-active bisguanidine ligands is studied; systematic modifications