| 19921059 |
Dai FR, Li B, Shi LX, Zhang LY, Chen ZN: Photochromic and electrochromic properties of oxo-centred triruthenium compounds with a dithienylethene bis (phosphine) ligand. Dalton Trans. 2009 Dec 14;(46):10244-9. Epub 2009 Sep 9.
The reaction of 1,2-bis (5-(diphenylphosphino)-2-methylthien-3-yl) cyclopentene (PPh (2)-DTE-PPh (2)) with the triruthenium cluster precursor [Ru (3) O (OAc)(6)(py)(2)(CH (3) OH)](PF (6)) (1) gave monomeric or dimeric derivatives [Ru (3) O (OAc)(6)(py)(2){PPh (2)-DTE-PPh (2)}](PF (6)) ([2] PF (6)) and [{Ru (3) O (OAc)(6)(py)(2)}(2){mu-PPh (2)-DTE-PPh (2)}](PF (6))(2) ([3] PF (6)). Reduction of [2](+) and [3](2+) afforded one- or two-electron-reduced neutral products Ru (3) O (OAc)(6)(py)(2){PPh (2)-DTE-PPh (2)} (2) and {Ru (3) O (OAc)(6)(py)(2)}(2){mu-PPh (2)-DTE-PPh (2)} () 3, respectively. These triruthenium complexes show remarkable photochromism through photochemical ring-closing (UV light irradiation) and ring-opening (Vis light irradiation) processes as well as electrochromic properties through oxidation/reduction in the triruthenium cluster. Both the photochromic and electrochromic properties of 2 and 3 are highly reversible. |
2(0,0,0,2) |