利用水热合成方法合成了2个新的苯并咪唑修饰的Keggin型多酸基化合物[(C_7H_6N_2)_3(H_3PMo_(12)O_(40))]·H_2O(1)和[KNa_2(C_7H_5N_2)_2(H_(2.5)Si W_(12)O_(40))_2]·6(C_7H_6N_2)(2)(C_7H_6N_2=苯并咪唑).化合物1为超分子结构,化合物2为2种碱金属钾和钠与多酸配位形成链状多酸基化合物,并通过元素分析和X-射线单晶衍射方法确定了2种化合物的晶体结构.单晶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=1.1580(7)nm,b=1.3159(8)nm,c=1.8254(12)nm,α=84.418(10)°,β=88.958(10)°,γ=65.852(10)°,V=2.5255(3)nm3,Z=2;化合物2也属于三斜晶系,P-1空间群,晶胞参数a=1.3586(9)nm,b=1.4403(10)nm,c=1.8365(13)nm,α=109.509(10)°,β=90.755(10)°,γ=114.864(10)°,V=3.0236(4)nm3,Z=1.
Two new Keggin-based compounds modified by benzimidazole, [(C_7H_6N_2)_3(H_3PMo_(12)O_(40))]·H_2O(1) and [KNa_2(C_7H_5N_2)_2(H_(2.5)SiW_(12)O_(40))_2]·6(C_7H_6N_2)(2)(C_7H_6N_2=benzimidazole) have been synthesized under hydrothermal conditions, and characterized by elemental analyses and single crystal X-ray diffraction. Compound 1 is a supramolecular structure. In compound 2, two kinds of alkali metal atoms coordinate with polyanions to form a one-dimensional chain. Compound 1 crystallizes in the triclinic system, space group P-1, a=1.158 0(7) nm, b=1.315 9(8) nm, c=1.825 4(12) nm, α=84.418(10)°, β=88.958(10)°, γ=65.852(10)°, V=2.525 5(3) nm3, Z=2. Compound 2 also crystallizes in the triclinic system, space group P-1, a=1.358 6(9) nm, b=1.440 3(10) nm, c=1.836 5(13) nm, α=109.509(10)°, β=90.755(10)°, γ=114.864(10)°, V=3.023 6(4) nm3, Z=1.