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用常规合成方法制备了基于Anderson结构阴离子的二维层状化合物[(C6H5NO2)2Pr(H2O)4](CrMo6O24H6)·2.5H2O,通过红外光谱和X射线单晶衍射对其进行了表征.结果表明,该化合物属于单斜晶系,C2/c空间群.a=2.3442(9)nm,b=1.3291(5)nm,c=2.458(1)nm,β=103.08(1)°,V=7.460(5)nm3,R1=0.0727,wR2=0.1903.结构分析表明,[CrMo6O24H6]3-阴离子通过端氧担载一个配位的Pr3+离子形成中性的(C6H5NO2)Pr(H2O)4(CrMo6O24H6)基团,相邻的中性基团在Ot—Pr—Ot桥联下形成一维链,链与链又通过异烟酸的桥联形成二维层状结构.
The two-dimensional layered compound [(C6H5NO2) 2Pr (H2O) 4] (CrMo6O24H6) 2.5H2O based on Anderson anion was prepared by the conventional synthesis method and characterized by IR and X-ray single crystal diffraction. , The compound belongs to the monoclinic space group C2 / c with a = 2.3442 (9) nm, b = 1.3291 (5) nm, c = 2.458 (5) nm3, R1 = 0.0727, wR2 = 0.1903. Structural analysis showed that the [CrMo6O24H6] 3- anion supported a coordinated Pr3 + ion via terminal oxygen to form a neutral (C6H5NO2) Pr (H2O) 4 (CrMo6O24H6) The adjacent neutral groups form a one-dimensional chain under the Ot-Pr-Ot bridge. The chain and the chain form a two-dimensional layered structure through the isonicotinoid bridging.