Synthesis, Characterisation and Ligand Properties of Novel Bi‐1,2,3‐triazole Ligands
作者:Uwe Monkowius、Stefan Ritter、Burkhard König、Manfred Zabel、Hartmut Yersin
DOI:10.1002/ejic.200700479
日期:2007.10
In all complexes the Bn-bta acts as a bidentate ligand with structural features comparable to the analogous 2,2′-bipyridine complexes. In their electronic absorption spectra the RuII and ReI complexes exhibit a lowest energy band at around 300 nm, which is substantially higher in energy than in analogous complexes with bpy ligands. All R-bta ligands yield complexes that are not luminescent in solution
三个 1,1'-二取代 4,4'-bi-1H-1,2,3-三唑 [R-bta; R = Bn (1), Ph (2), CH2COOH (3)] 已通过 CuI 催化的 1,3-丁二炔和有机叠氮化物之间的“点击”反应合成为双齿氮基配体。通过制备复合物 [RuII(R-bta)3]Cl2 [R = Bn (4), Ph (5), CH2COOH (6)], [(Bn-bta)CuI(DPEPhos)] 来研究它们的配体性质(7) [DPEPhos = 双2-(二苯基膦基)苯基}醚]和[(Bn-bta)ReI(CO)3Cl] (8)遵循标准反应程序。所有化合物均通过元素分析、质谱和 NMR、IR、UV/Vis 和发光光谱进行分析。此外,1-4、7 和 8 的分子结构已通过 X 射线晶体学确定。在所有复合物中,Bn-bta 作为双齿配体,其结构特征与类似的 2,2'-联吡啶复合物相当。在它们的电子吸收光谱中,RuII