Waugh型化合物(NH_4)_2(C_5H_6N)_4MnMo_9O_(32)·8H_2O的合成、晶体结构及表征

Synthesis,crystal structure and characterization of the Waugh-type compound (NH_4)_2(C_5H_6N)_4MnMo_9O_(32)·8H_2O

以(NH4)6MnMo9O32·6H2O和吡啶为原料,采用常规的水溶液法首次合成了质子化的吡啶阳离子作为抗衡离子的Waugh型钼酸盐(NH4)2(C5H6N)4MnMo9O32·8H2O,对其进行了单晶结构测定、元素分析、红外光谱及固体紫外可见漫反射光谱表征.晶体学参数为:单斜晶系,P21/c空间群,a=2.180 5(17)nm,b=1.439 4(11)nm,c=1.570 7(12)nm,β=106.68(10)°,V=4.722 5(6)nm3,Z=4,Dc=3.386g/cm3,R1=0.058 6,wR2=0.183 1(I>2σ),GOF=1.058.

A new Waugh molybdate formulated as （NH4） 2 （C5 H6 N） 4 MnMo9 032 · 8 H20 has been isolated by reacting of （NH4）6MnMogO32 · 6H2O and pyridine in aqueous solution, and characterized by single X-ray diffraction, elemental analysis, IR and solid UV-Vis diffuse reflectance spectroscopy. Crystal structural analysis indicate that the title compound crystallizes in the monoclinic system with space group P21/c, a=2.180 5（17） nm, b=1.439 4（11） nm, c=1.570 7（12） nm,fl=106.68（10）°, V=4.722 5（6） Z=4,Dc= 3.386 g/cm3, R1= 0.058 6, wR2= 0. 183 1 （I〉2σ）, GOF=1.058.