Reaction of [Ru(trpy)Cl₃] with 1,4‐diazabutadienes (p‐RC₆H₄N=C(H)‐(H)C=NC₆H₄R‐p; R = OCH₃, CH₃, H and Cl; abbreviated as L‐R) in refluxing ethanol in the presence of triethylamine has afforded a family of complexes, isolated as perchlorate salts, of type [Ru(trpy)(L‐R)Cl]ClO₄ [depicted as complexes 1 (R = OCH₃), 2 (R = CH₃), 3 (R = H) and 4 (R = Cl)]. Crystal structures of complexes 1, 2 and 4 have been determined, and structure of complex 3 has been optimized by DFT method. The 1,4‐diazabutadiene ligand in each complex is bound to ruthenium as a N,N‐donor forming five‐membered chelate. Complexes 1–4 catalyze transfer hydrogenation of aryl aldehydes to the corresponding alcohols with high (ca. 10⁶) TON. They are also found to catalyze transfer hydrogenation of aryl ketones to corresponding secondary alcohols, but with much less efficiency. Catalytic transfer hydrogenation of nitroarenes to the corresponding amines has also been achieved.

中文翻译：

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钌的1,4-异氮杂丁二烯络合物：催化转移加氢反应的合成，表征和利用

的[Ru（trpy）的Cl反应₃ ]与1,4- diazabutadienes（p -RC ₆ ħ ₄ N = C（H） - （H）C = NC ₆ H ^ ₄ R- p ; R = OCH ₃，CH ₃，H和Cl;缩写为L-R ）中，在三乙胺的存在下回流的乙醇已得到一个家庭复合物，分离为高氯酸盐，类型的[Ru（trpy）（L-R）CL] CLO ₄ [描绘为络合物1（R = OCH ₃），2（R = CH ₃），3（R = H）和4（R = Cl）]]。配合物的晶体结构1，2和4已被确定，并且结构复杂3已经由DFT方法进行了优化。每个络合物中的1,4-二氮杂丁二烯配体以N，N-给体形式与钌结合形成五元螯合物。配合物1-4催化高芳烃（约10 ⁶）转移芳基醛到相应的醇。还发现它们催化芳基酮转移氢化成相应的仲醇，但是效率低得多。还已经实现了硝基芳烃的催化转移氢化为相应的胺。