The synthesis, structural and magnetic characterisation of a family of homo- and heterometallic complexes constructed with the Schiff base ligands 2-iminomethyl-6-methoxy-phenol (L1H) and 2-imino-6-methoxy-phenol (L2H), are discussed. Members include the heterometallic tetranuclear complexes of general formula [Na2M2(X)2(L1)4(Y)2] (where M = FeIII, X = −OMe, Y = NO3− (1) and M = NiII, X = N3− and Y = MeCN (2)), each possessing a butterfly-like topology. We also report the formation of the heterometallic molecular cage [Na3Ni2(L1)6](ClO4) (3) whose metallic skeleton describes a [rare] trigonal bipyramid, the homometallic 1-D coordination polymer [Mn(L1)2(Cl)]n (4), and the tetranuclear cubane clusters [MnIII3MnIV(O)3(OEt)(OAc)3(L1)3] (5) and [Ni4(μ3-OMe)4(L2)4(MeOH)4] (6). Dc and ac magnetic susceptibility studies on complexes 5 and 6 reveal S = 9/2 and S = 4 spin ground states.
本文讨论了用希夫碱
配体 2-iminomethyl-6-methoxy-phenol (L1H) 和 2-imino-6-methoxy-phenol (
L2H) 构建的一系列同
金属和异
金属配合物的合成、结构和磁性特征。其中包括通式为 [Na2M2(X)2(L1)4(Y)2](其中 M = FeIII、X = -OMe、Y =
NO3- (1) 和 M = NiII、X = N3- 和 Y = MeCN (2))的异
金属四核配合物,每个配合物都具有蝴蝶状拓扑结构。我们还报告了异
金属分子笼[Na3Ni2(L1)6](
ClO4)(3)的形成,其
金属骨架描述了一个[稀有]三叉双锥体、同
金属一维配位聚合物[Mn(L1)2(Cl)]n (4),以及四核立方体团簇[MnIII3MnIV(O)3(OEt)(OAc)3(L1)3] (5) 和[Ni4(μ3-OMe)4(
L2)4(MeOH)4] (6)。对复合物 5 和 6 进行的直流和交流磁感应强度研究揭示了 S = 9/2 和 S = 4 自旋基态。