Solution, structural and photophysical aspects of substituent effects in the N^N ligand in [Ir(C^N)2(N^N)]+ complexes
作者:Edwin C. Constable、Catherine E. Housecroft、Peter Kopecky、Colin J. Martin、Iain A. Wright、Jennifer A. Zampese、Henk J. Bolink、Antonio Pertegas
DOI:10.1039/c3dt50492a
日期:——
6-(3-tolyl)-2,2′-bipyridine (5), 4,6-bis(4-nitrophenyl)-2,2′-bipyridine (9), and 4,6-bis(3,4,5-trimethoxyphenyl)-2,2′-bipyridine (10) are new and their characterization includes single crystal structures of 9, and two polymorphs of 10. A representative [Ir(ppy)2(N^O)]+ complex is also described. We report solution NMR spectroscopic, photophysical and electrochemical properties of the complexes, as well as
一系列11种新的[Ir(ppy)2(N ^ N)] [PF 6 ]配合物(Hppy =2-苯基吡啶)的报告。N ^ N个配体基于2,2-联吡啶 (py),在6或5位上被结构和电子形式不同的基团取代。除了两个N ^ N配体外,所有芳族环均包含一个芳香环,设计用于促进N ^ N和一个[ppy] -配体之间的阳离子内面对面的π相互作用。在一组配体中6-(3-甲苯基)-2,2'-联吡啶(5),4,6-双(4-硝基苯基)-2,2'-联吡啶(9),以及4,6-双(3,4,5-三甲氧基苯基)-2,2'-联吡啶(10)是新的,它们的表征包括9的单晶结构和10的两个多晶型。还描述了代表性的[Ir(ppy)2(N ^ O)] +络合物。我们报告了溶液NMR光谱,配合物的光物理和电化学性质,以及代表性的固态结构数据。溶液的1 H NMR光谱数据说明了不同的动力学过程,其中涉及与配体中bpy域相连的取代基。在脱气