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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Synthesis and characterization of bridged bis(amidato) rare earth metal amides and their applications in C-N bond formation reactions
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Synthesis and characterization of bridged bis(amidato) rare earth metal amides and their applications in C-N bond formation reactions

机译：桥联双（酰胺）稀土金属酰胺的合成，表征及其在C-N键形成反应中的应用

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摘要

Based on three bisamide pro ligands H2Ln (n = 1-3) (H2Ln = f(Me3C6H2CONHCH2)(2)CH2), H2L2 = l(Me3C6H2CONHCH2)(2)C(CH3)(2)], H2L3 = Ne3C H2CONH(CH2)(2)](2)NCH3), eight bis(amidato) trivalent rareearth metal amides {L'REIN(TMS)(2)](2) (n = 1, RE = La (1), Sm (2), Nd (3), Y (4); n = 2, RE = La (5), Nd (6); n = 3, RE = La (7), Nd (8); TMS = SiMe3) were successfully synthesized by treatment of FIX with RE[N(TMS),13 in a 1 :1 molar ratio. Complexes 3, and 5-8 were characterized by single -crystal X-ray diffraction, and NMR characterization was carried out for the La complexes 1, 5, 7 and the Y complex 4. These complexes exhibited high catalytic activities in both the direct amidation of aldehydes and the addition of amines with carbodiimine. It was found that the bis(amidato) rare earth metal amides bearing different linkers have different effects on the transformations and lanthanum and neodymium complexes performed better than others.
机译：基于三个双酰胺亲配体H2Ln（n = 1-3）（H2Ln = f（Me3C6H2CONHCH2）（2）CH2），H2L2 = 1（Me3C6H2CONHCH2）（2）C（CH3）（2）]，H2L3 = Ne3C H2CONH（ CH2）（2）]（2）NCH3），八种双（酰胺）三价稀土金属酰胺{L'REIN（TMS）（2）]（2）（n = 1，RE = La（1），Sm（2 ），Nd（3），Y（4）; n = 2，RE = La（5），Nd（6）; n = 3，RE = La（7），Nd（8）; TMS = SiMe3）已成功通过用RE [N（TMS），13以1：1的摩尔比处理FIX来合成。配合物3和5-8通过单晶X射线衍射进行表征，并对La配合物1、5、7和Y配合物4进行NMR表征。这些配合物在直接酰胺化反应中均显示出高催化活性醛和碳二亚胺添加胺。已发现带有不同连接基的双（酰胺）稀土金属酰胺对转化的影响不同，镧和钕配合物的性能更好。

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