Ruthenium(II) complexes of the tetradentate polypyridyl thioether 1,2-bis[3′-(2″-pyridyl)-1′-thiapropyl]benzene
作者:GorDan T. Reeves、Anthony W. Addison、Matthias Zeller
DOI:10.1016/j.poly.2020.114367
日期:2020.3
Several new Ru(II) polypyridyl complexes of the novel tetradentate thioether 1,2-bis[3′-(2″-pyridyl)-1′-thiapropyl]benzene (Ppes) form from the dinuclear ruthenium(II) complex [Ru(Ppes)}2(µ-Cl)2]2+ via reaction with various bidentate diimines. Facile symmetrical bridge cleavage occurs, producing mononuclear complexes of the form [Ru(Ppes)(L)]2+, where L is the bidentate diimine. Redox chemistry shows single-electron
Synthesis, crystal structures and cytotoxic activity of two zinc(II) complexes derived from benzimidazole derivatives
作者:Wen-Yi Su、Rong-Kai Pan、Jiang-Li Song、Guo-Bi Li、Sheng-Gui Liu
DOI:10.1016/j.poly.2019.01.012
日期:2019.3
[Zn(L1)Cl2]·DMF (1) and Zn(L2)Cl2 (2) (L1 = 2-[2-(benzimidazol-2-yl)-phenyl]-1-methyl-benzimidazole, L2 = 1,2-bis(1-methyl-benzimidazol-2-yl)benzene) were synthesized and characterized by X-ray single-crystal structure analyses. Complexes 1 and 2 crystallize in the monoclinic space group P21/n. The metal center of Zn2+ is coordinated by two N atoms and two Cl atoms, forming a distorted tetrahedron geometry in each
Formal transfers of hydride from carbon–hydrogen bonds. Attempted generation of H<sub>2</sub> by intramolecular protonolyses of the activated carbon–hydrogen bonds of dihydrobenzimidazoles
作者:Philippe Brunet、James D. Wuest
DOI:10.1139/v96-074
日期:1996.5.1
Protonolyses of carbon–hydrogenbonds can occur under suitable conditions to produce carbocations and H2. In an effort to accelerate these fundamental reactions, we have attempted to make them intramolecular by devising compounds in which carbon–hydrogenbonds designed to be particularly good formal donors of hydride are held in close proximity to acidic sites. Dihydrobenzimidazoles 4 and 11 are compounds