Synthesis and Structural Characterization of a Series of Novel Polyaromatic Ligands Containing Pyrene and Related Biscyclometalated Iridium(III) Complexes
作者:Alex S. Ionkin、William J. Marshall、Brian M. Fish
DOI:10.1021/om0510775
日期:2006.3.1
three types of pyrene-containing phenylpyridine ligands in trimethyl phosphate. The systems include complexes 10 and 12, in which the pyrene ring is cyclometalated by iridium; complex 19, in which the pyrene ring is attached to a pyridine moiety; and complex 32, in which the pyrene is attached to a cyclometalated phenyl moiety. In the solid state, complexes 12 and 19 exhibit π-stacking arrangements through
通过铃木交叉偶联反应合成了一系列新颖的多芳族配体,这些配体包含在中心吡啶环周围具有不同取代类型的pyr。该系列由4-甲基-2-吡啶-1-基吡啶(5)组成,其中the环连接在吡啶的2-位上;2-(3,5-双(三氟甲基)苯基)-5-吡啶-1-基吡啶(16),其中pyr环连接在吡啶的5-位上;和4-甲基-2-(3-吡啶-1-基苯基)吡啶(30),其中the环连接到2-苯基吡啶部分的3-位。新颖的大体积二叔丁基(吡喃-1-基)膦(25)首次在Suzuki偶联反应中用作配体。在钯络合物6,7和31也被分离为来自相应的Suzuki反应催化剂降解产物。迄今为止,一些最大的环金属化体系是通过磷酸三甲酯中的上述三种类型的含pyr苯基吡啶配体的双环化反应合成的。该系统包括配合物10和12,其中the环被铱环金属化。配合物19,其中the环连接至吡啶部分;和复杂的32,其中the连接到环金属化的苯基部分。在固态