基于4-氨基-1,2,4-三唑和多金属氧酸盐为杂化配体的Cu~Ⅱ和Cu~Ⅰ配合物的水热合成及光催化性能（英文）

Hydrothermal Assembly and Photocatalytic Characterization of Polyoxometalate-Based Cu~Ⅱ and Cu~Ⅰ Hybrid Coordination Framework with 4-Amino-1,2,4-triazole

在水热条件下,制备了2个基于多金属氧酸盐(POM)的Cu~Ⅱ和Cu~Ⅰ新型杂化配合物材料,即[Cu_2(4-NH_2-trz)4(Mo_8O_(26))(H_2O)_4]·5H_2O(1)和[Cu_4(4-NH_2-trz)4Mo_8O_(26)](2)(4-NH_2-trz=4-氨基-1,2,4-三唑)。通过单晶X射线衍射、傅里叶变换红外光谱和粉末X射线衍射分析确定了它们的结构。在配合物1中,4-氨基-1,2,4-三唑双齿配体连接2个相邻的CuⅡ中心形成双核结构单元,这些双核结构单元进一步通过Mo_8O_(26)^(4-)连接形成一维(1D)的杂化配位结构。在配合物2中,4-氨基-1,2,4-三唑双齿配体连接相邻CuⅠ中心构筑了独特的[Cu4(4-NH2-trz)4]n一维螺旋链,这些左手和右手的一维螺旋链再通过(β-Mo_8O_(26))^(4-)连接形成2D杂化骨架。光催化实验研究表明,样品1和样品2对于不同有机染料(亚甲基蓝(MB)、罗丹明B(Rh B)和甲基橙(MO))具有很好的光催化降解能力。

Under hydrothermal conditions,two novel polyoxometalate(P0M)-based Cu!and Cu 1 hybrid materials,namely[Cu2(4-NH2-trz)4(M〇8 0 26)(H2 0)4].5 H2 0(1)and[Cu4(4-NH2-trz)4M〇8 0 26](2)(4-NH2-trz=4-amino-1,2,4-triazole)have been designed and synthesized.Their crystal structures have been determined by single crystal X-ray diffraction,FT-IR infrared spectra and powder X-ray diffraction analysis.In 1,bi-dentate 4-NH2-trz ligands bridge two neighboring Cu!centers forming dinuclear structural units,which are further linked by Mo8 0 264-ions and arranged into a one-dimensional(1D)hybrid coordination framework.In 2,bidentate 4-NH2-trz ligands also link neighboring Cu1 centers to generate unique 1D[Cu4(4-NH2-trz)4〇n helical chains.Further these infinite righthand and left-hand helical chains are linked by(!-M o 8 0 26)4-anions to form a 2D hybrid framework.Photocatalytic activities for decomposition of different organic dyes(methylene blue(MB),rhodamine B(RhB)and methyl orange(M0))have been investigated for 1 and 2,indicating that 1 and 2 are good candidates for the photocatalytic degradation of these organic dyes.CCDC:1554212,1;1473507,2.