Synthesis and catalytic applications of Ru and Ir complexes containing N,O-chelating ligand
作者:Bilge Pakyapan、Serdar Batıkan Kavukcu、Zarife Sibel Şahin、Hayati Türkmen
DOI:10.1016/j.jorganchem.2020.121486
日期:2020.10
crystallography. The complexes (Ru1–5, Ir1–5) were applied to investigate the electronic and steric effect of ligand in their catalytic activities in transfer hydrogenation and alpha(α)-alkylation reaction of ketones with alcohols. The activities of iridium complexes (Ir1–5) were much more efficient than ruthenium complexes (Ru1–5). The highest activity for both reactions was observed for the complex (Ir2) with
具有N,O螯合配体的一系列单金属配合物(Ru 1-3,Ir 1-3)(吡嗪-2-羧酸盐(1),吡啶-2-羧酸盐(2),喹啉羧酸盐(3)和双金属合成了吡嗪-2,3-二羧酸盐(4)和咪唑-4,5-二羧酸盐(5 )桥接的配合物(Ru 4,5,Ir 4,5),并通过1 H-,13 C NMR,FT-进行了表征红外光谱和元素分析,Ir 2的晶体结构通过X射线晶体学测定,配合物(Ru 1–5,Ir 1-5)用于研究配体在酮与醇的转移氢化和α(α)-烷基化反应中的催化活性中的电子和空间效应。铱配合物(Ir 1-5)的活性比钌配合物(Ru 1-5)有效得多。对于具有吡啶-2-羧酸酯的配合物(Ir 2),观察到两个反应的最高活性。监测两个反应的氢化铱物质。