Novel 1,2,3-triazolyl phosphine with a pyridyl functionality: synthesis, coinage metal complexes, photophysical studies and Cu(<scp>i</scp>) catalyzed C–O coupling of phenols with aryl bromides
作者:Sonu Sheokand、Dipanjan Mondal、Basvaraj S. Kote、Latchupatula Radhakrishna、Maravanji S. Balakrishna
DOI:10.1039/d2dt03791b
日期:——
This manuscript describes the synthesis and coinage metal complexes of pyridine appended 1,2,3-triazolyl-phosphine [2-(C6H4N)(C2(PPh2)N3C6H5)}] (1), photophysical studies and their catalytic application. The reactions of 1 with copper salts afforded dimeric complexes [Cu(μ2-X)}22-(C6H4N)(C2(PPh2)N3C6H5)}2] (2, X = Cl; 3, X = Br; and 4, X = I). The crystal structure indicates that the Cu⋯Cu distance
本手稿描述了吡啶附加 1,2,3-三唑基膦 [2-(C 6 H 4 N)(C 2 (PPh 2 )N 3 C 6 H 5 )}] ( 1 )、光物理研究及其催化应用。1与铜盐反应得到二聚配合物[Cu(μ 2 -X)} 2 2-(C 6 H 4 N)(C 2 (PPh 2 )N 3 C 6 H 5 )} 2 ] ( 2 , X = 氯;3、X=Br;和4,X = I)。晶体结构表明 4 (2.694 Å) 中的 Cu⋯Cu 距离明显短于配合物3 (3.0387 Å) 和2 (3.104 Å) 中的距离,表明强烈的亲铜相互作用,这也得到 NBO 计算的支持,表明参与来自每个 Cu 原子的 3d z 2轨道有助于键合相互作用。在固态下对复合物2-4进行的荧光研究显示在λ ex = 420 nm 激发时在 560 nm 左右有宽发射带。综合体4在用两当量的 1,10-菲咯啉处理后,产生了单核