利用水热合成方法合成了两个新的Keggin基有机-无机杂化化合物:[Cu(H2bdpm)2(H2PMo12O40)]·3H2O(1)和[Ag(H2bdpm)2Na2(H2O)3(HSiW12O40)]·3H2O(2),并通过元素分析、红外光谱和X-射线单晶衍射方法确定了两个化合物的晶体结构。结构分析表明化合物1属于三斜晶系,P-1空间群,晶胞参数 a=12.827(7)nm,b=12.888(7)nm,c=19.345(11)nm,α=80.414(10)°,β=89.761(10)°,γ=78.477(10)°,V=3088.6(3)nm3。化合物2属于三斜晶系,P-1空间群,晶胞参数a=12.958(5)nm,b=12.965(5)nm,c=19.522(7)nm,α=80.731(6)°,β=89.284(6)°,γ=78.047(7)°,V=3166(2)nm3。化合物1展示了一个由Keggin型多酸和[ Cu( H2 bdpm)2]+亚单元相互连接而形成的一维链结构;化合物2中包含一个SiW12-Na构筑的无机链,而[ Ag( H2 bdpm)]+亚单元上下交替共价键连到该无机链上,进一步稳固了一维链的结构。标题化合物的光催化降解亚甲基蓝实验表明,目标化合物具有光催化性能,可作为潜在的无机-有机杂化功能材料。
Two new Keggin-based organic-inorganic compounds,[Cu(H2bdpm)2(H2PMo12 O40)]·3H2O(1) and[Ag (H2bdpm)2Na2(H2O)3(HSiW12O40)]·3H2O(2),have been synthesized under hydrothermal conditions and characterized by ele-mental analyses,IR spectra and single crystal X-ray diffraction. Compound 1 crystallizes in the triclinic system,space group P-1,a=12. 827(7)nm,b=12. 888(7)nm,c=19. 345(11)nm,α=80. 414(10)°,β=89. 761(10)°,γ=78. 477(10)°,V=3088. 6(3) nm3. Compound 2 also crystallizes in the triclinic system,space group P-1,a=12. 958(5)nm,b=12. 965(5)nm,c=19. 522(7) nm,α=80. 731(6)°,β=89. 284(6)°,γ=78. 047(7)°,V=3166(2)nm3. Compound 1 shows a 1D chain linked by Keggin anions and[Cu(H2bdpm)2]+ subunits alternately. Compound 2 contains a SiW12-Na inorganic chain with the[Ag(H2bdpm)]+ subunits fused up and down. We have studied the photocatalytic activity of the title compounds.