Electronic Structures of Tris(dioxolene)chromium and Tris(dithiolene)chromium Complexes of the Electron-Transfer Series [Cr(dioxolene)<sub>3</sub>]<i><sup>z</sup></i> and [Cr(dithiolene)<sub>3</sub>]<i><sup>z</sup></i> (<i>z</i> = 0, 1−, 2−, 3−). A Combined Experimental and Density Functional Theoretical Study
作者:Ruta R. Kapre、Eberhard Bothe、Thomas Weyhermüller、Serena DeBeer George、Nicoleta Muresan、Karl Wieghardt
DOI:10.1021/ic7008607
日期:2007.9.1
electron-transfer series [Cr(3,5L(S,S))3]z (z = 0, 1-, 2-, 3-). It is shown by Cr K-edge and S K-edge X-ray absorption, UV-vis, and EPR spectroscopies, as well as X-ray crystallography, of 1 and 3 that the oxidation state of the central Cr ion in each member of both electron-transfer series remains the same (+III) and that all redox processes are ligand-based. These experimental results have been corroborated
在空气存在下,由3,6-二叔丁基邻苯二酚,H2 [3,6L(cat)],[CrCl3(thf)3]和NEt3在CH3CN中的反应混合物制得,6L *(sq))3](S = 0)(1)被分离。在CH2Cl2中用[Co(Cp)2]还原1得到[Co(Cp)2] [CrIII(3,6L *(sq))2(3,6L(cat)))的微晶(S = 1/2 )(2),其中(3,6L *(sq)(1-)是儿茶酚酸二阴离子(3,6Lcat)(2-)的自由基单阴离子邻半醌转移系列[Cr(3,6LO,O)] z(z = 0,1-,2-,3-)。相应的三(苯并1,2-二硫代镧)铬配合物[N(n-Bu) 4] [CrIII(3,5L * S,S)2(3,5LS,S)](S = 1/2)(3)也已分离;(3,5LS,S)(2-)代表闭壳二价阴离子3,5-二叔丁基苯-1,2-二硫代磺酸盐(2-)和(3,5L * S,S)(