ligands, 6,6''-(2,6-i-Pr2C6H3)N=CR}2-2,2':6',2''-C15H9N3 (R = H L1, Me L2), have been prepared in high yield from the condensation reaction of the corresponding carbonyl compound with two equivalents of 2,6-diisopropylaniline. The molecular structure of L2 reveals a transoid relationship between the imino and pyridyl nitrogen groups throughout the ligand framework. Treatment of aldimine-containing L1 with
双(亚
氨基)三联
吡啶配体,6,6''-(2,6-i-Pr2C6H3)N = CR} 2-2,2':6',2''-
C15H9N3(R = H L1,Me通过相应的羰基化合物与两个当量的2,6-
二异丙基苯胺的缩合反应,可以高收率制备
L2)。
L2的分子结构揭示了整个
配体框架中亚
氨基和
吡啶基氮基团之间的反式关系。在110摄氏度下,在n-BuOH中用一当量或过量的MX2处理含醛
亚胺的L1,得到单核五配位络合物[(L1)MX2](M = Fe,X = Cl 1a; M = Ni, X = Br 1b; M = Zn,X = Cl 1c),其中
金属中心占据了联
吡啶的腔并且亚
氨基基团是侧基。相反,含酮
亚胺的
L2与过量的MX2在
正丁醇中于110摄氏度反应,得到双核络合物,[(
L2)M2X4](M = Fe,X = Cl 3a; M = Ni,X = Br 3b; M = Zn,X = Cl 3c),其中一