本文以对叔丁基杯【8】芳烃(H8C8A)为配体,在溶剂热条件下制得了3个3d—y化合物,[Co2Th4(HC8A)2O2(OH)2(DMF)6(1)、[Ni2Th5(H2C8A)(C8A)O4(0H)2(DMF)5(CH3OH)2](2)、[Zn2Th6(HC8A)(C8A)O5(CH3O)(C3H6NO2)2(DMF)5(CH3OH)](3)(其中H8C8A=对叔丁基杯【8】芳烃,DMF=N,N-二甲基甲酰胺)。X-射线单晶测试表明,这3个化合物均为2个以尾对尾方式排列的杯【8】芳烃分子中间夹1个3d—y核簇的三明治型结构。杯【8】芳烃均表现为双锥式构型,且每个锥式空腔下缘结合1个钍离子,双锥的连接处及2个杯芳烃分子之间由过渡金属离子或钍离子连接。不同过渡金属离子不同的配位环境导致3种不同核簇的形成。化合物1的磁性研究表明。该化合物在低温下表现出弱铁磁性相互作用。
Three compounds, [Co2Th4(HC8A)2O2(OH)2(DMF)6] (1), [Ni2Th5(H2C8A)(C8A)O4(OH)2(DMF)5(CH3OH)2] (2), [Zn2Th6(HC8A)(C8A)O5(CH3O)(C3H6NO2)2(DMF)5(CH3OH)] (3) (H8CSA=p-tert-butylcalix[8]arene, DMF=N,N- dimethylformide), were obtained by solvothermal method and characterized by single crystal X-ray diffraction, element analysis, and so on. All these three structures are featured by some sandwich-like units which are constructed by two tail-to-tail calix[8]arene molecules and one in-between 3d-5f polynuclear core. All the calix[8]- arene molecules adopt a double-cone conformation, each cone of calix[8]arene molecule bonds one thorium cation by its lower rim, and two cones of one calixarene molecule is connected by some thorium or transition metal atoms. Magnetic measurement indicates that compound 1 exhibits weak ferromagnetic interaction between the metals at low temperature. CCDC: 968469, 1; 968470, 2; 968471, 3.