radii of lanthanide metals have a profound effect on the structures of the heterobimetallic complexes. Complexes 1 to 4 are efficientcatalysts for amidation reactions of aldehydes with amines to produce amides in good to excellent yields under mild conditions.
碳桥联的双(酚盐)配体MBMP 2–(MBMP = 2,2'-亚甲基双(6-叔丁基-4-甲基酚盐))稳定的四种杂双金属镧系-钾络合物,[(MBMP)2 La (THF)2 } 2 K] [K(THF)6 ](1),[(MBMP)Nd(μ-MBMP)K(THF)] 2(2),[(THF)2 Sm(MBMP)2 K (THF)2 ](3)和[(THF)2 Yb(MBMP)2 K(THF)3 ](4),合成,并提供其结构特征。发现镧系金属的离子半径对异双金属配合物的结构具有深远的影响。配合物1至4是用于与胺以产生酰胺以良好至在温和条件下高收率醛的酰胺化反应有效的催化剂。