Tetranuclear Copper(I) Iodide Complexes of Chelating Bis(1-benzyl-1<i>H</i>-1,2,3-triazole) Ligands: Structural Characterization and Solid State Photoluminescence
作者:Gerald F. Manbeck、William W. Brennessel、Christopher M. Evans、Richard Eisenberg
DOI:10.1021/ic902236n
日期:2010.3.15
series of tetranuclear Cu4I4(Ln)2 clusters (1−3) supported by the chelating 4,4′-(4,5-diX-1,2-phenylene)bis(1-benzyl-1H-1,2,3-triazole) ligands (L1, X = H; L2, X = CH3; L3, X = F) have been prepared. Crystal structure determinations have shown that the clusters adopt a distorted “step-type” geometry in which the triazole ligands exhibit both chelating and bridging coordination modes to Cu(I) ions. When
一系列四核的Cu 4我4(大号Ñ)2簇(1 - 3) - (4,5-二由螯合4,4'支持的X - 1,2-亚苯基)双(1-苄基1 ħ制备了(1,2,3-三唑)配体(L1,X = H; L2,X = CH 3 ; L3,X = F)。晶体结构的确定表明,团簇采用扭曲的“阶梯型”几何形状,其中三唑配体对Cu(I)离子表现出螯合和桥联配位模式。当L3以3∶2的CuI / L 3的比例使用H 2 O ,获得结晶产物4。产物4实际上是四核簇3(表示为4a)和双核Cu 2 I 2(L3)2络合物(4b)的1:1共结晶。的X射线结构1,2,和4分别示出以四核和双核形式紧密铜...铜触点的存在。1个1 H NMR实验表明在这些系统中发生快速交换。所有簇在77 K和室温下均以λmax = 495-524 nm的固态发出明亮的光。发射强度衰减符合单个指数,其寿命在室温下大约为10到35微秒,在77 K下大约为