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用水热合成法成功地合成了以硒为杂原子、以过渡金属铁为取代原子的新型三元杂多金属氧酸盐.给出了反应的pH值和最佳物料比.通过元素分析、红外光谱、紫外光谱、差热分析等方法对产物进行了表征,用X射线单晶衍射法测定了Na2H4[Fe4Cl2(H2O)8(β-SeW9O33)2]·22H2O的晶体结构.该晶体属于单斜晶系,C2/m空间群,a=20.307(8,b=15.408(6),c=16.379(7),β=95.061(7)°,V=5105(4)3,Z=2.最终偏差因子R=0.072.
A novel ternary heteropolyoxometalate containing selenium as a heteroatom and transition metal iron as a substitute atom was successfully synthesized by hydrothermal synthesis method. The pH value of the reaction and the optimum material ratio were given. Through elemental analysis, infrared The crystal structure of Na2H4 [Fe4Cl2 (H2O) 8 (β-SeW9O33) 2] · 22H2O was characterized by X-ray single crystal diffraction, UV spectroscopy, differential thermal analysis etc. The crystal belongs to monoclinic (A) = 20.307 (8, b = 15.408 (6), c = 16.379 (7), β = 95.061 (7) °, V = 5105 (4) 3, Z = 2. Deviation factor R = 0.072.