[N(CH_2CH_2CH_2CH_3)_4]_3[AsMo_(12)O_(40)]的合成、晶体结构及磁性研究

Synthesis,magnetism and crystal structure of Keggin-type polyoxometalate:[N(CH_2CH_2CH_2CH_3)_4]_3[AsMo_(12)O_(40)]

合成了有机无机杂化化合物[N(CH2CH2CH2CH3)4]3[AsMo12O40],用X-射线单晶衍射、元素分析、红外光谱和变温磁化率对晶体结构进行了表征.该晶体属于单斜晶系,Pc空间群,a=1.416 48(14)nm,b=1.753 25(17)nm,c=2.280 7(2)nm,β=101.626(2)°,V=5 547.9(9)nm3,Z=2,R1=0.076 5,wR2=0.240 9.在该晶体结构中,带相反电荷的Keggin结构多阴离子[AsMo12 O40]3-簇和四丁基胺阳离子以静电引力结合,并交错排列.

A new organic-inorganic hybrid crystal [N（CH2CH2CH2CH3）4]3[AsMo12O40] has been synthesized and characterized by single crystal X-ray,elemental analysis,IR spectra and magnetic properties.Crystal data： Monoclinic,space group Pc,a =1.41648（14）nm,b= 1.75325（17）nm,c = 2.2807（2）nm,β = 101.626（2）°,V =5547.9（9）nm3,Z = 2,R1=0.0765,wR2=0.2409.X-ray analysis shows that the complex consists of two kinds of subunits： [AsMo12O40]3-and（CH2CH2CH2CH3）4N＋ cations.