Abstract An easy and convenient synthesis of a new series of octahedral ruthenium(III) complexes bearing Schiff base ligands of general formula [RuCl2(EPh3)2(L)] (where E = P, As and L = O,N-donor Schiff bases) has been reported. The composition of all complexes has been unequivocally characterized by spectral (IR, UV-vis, EPR) and ESI-MS techniques. The substituted Schiff base ligands behave as bidentate O,N-donors and coordinate to ruthenium via the phenolic oxygen, the azomethine nitrogen. Complexes 1–6 have been proven to catalyze the transfer hydrogenation of linear, cyclic and aromatic ketones to their corresponding secondary alcohols in the presence of i-PrOH/KOH at 80 °C with conversion up to 99%. The effect of other variables on the transfer hydrogenation reaction such as solvent, base, and catalyst loading is also reported. Graphical Abstract

中文翻译：

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芴胺基席夫碱配体衍生的新型钌(III)配合物的合成和表征及其在酮转移氢化中的催化活性

摘要 一种带有通式 [RuCl2(EPh3)2(L)] 的 Schiff 碱配体的新系列八面体钌 (III) 配合物的简单方便的合成（其中 E = P, As 和 L = O,N-供体 Schiff基）已被报道。所有配合物的组成已通过光谱（IR、UV-vis、EPR）和 ESI-MS 技术明确表征。取代的席夫碱配体表现为双齿 O,N 供体，并通过酚氧、偶氮甲碱与钌配位。已证明配合物 1-6 可在 i-PrOH/KOH 存在下在 80°C 下催化直链、环状和芳香酮转移氢化为其相应的仲醇，转化率高达 99%。还报告了其他变量对转移氢化反应的影响，如溶剂、碱和催化剂负载。