铌取代型杂多钨酸盐的合成、表征、生物活性及晶体结构

Synthesis, Crystal Structure and Bioactivity of Heteropolyoxotungstates Substituted by Niobium

合成了铌、过氧化铌取代的钨硅、钨锗杂多配合物 M7- m Hm[XW9Nb3O40 ]· n H2 O和 M7[XW9-(Nb O2 ) 3O37]· n H2 O(X=Si,Ge;M=K,Me4N,Bu4N) ,对化合物进行了元素分析 ,紫外光谱 ,红外光谱 ,1 83W NMR研究 ,通过单晶 X射线衍射对 K4H1 2 [Si2 W1 4 Nb1 0 O79]· 1 3 H2 O的晶体结构进行了表征 ,该化合物属单斜晶系 ,C2空间群 ,晶胞参数 a=1 .92 2 6(4 ) nm,b=3 .3 1 3 4 (7) nm,c=1 .2 4 97(3 ) nm,V=7.961 6(3 ) nm3,Dc=3 .2 4 0 g/ cm3,Z=3 ,μ=1 5.886mm- 1 ,F(0 0 0 ) =692 0 ,R=0 .0 565,WR2 =0 .0 972 .对化合物进行了抗番茄花叶病毒活性的研究 。

The new complexes M 7 m H m [XW 9Nb 3O 40 ]· n H 2O and M 7[XW 9(NbO 2) 3O 37 ]· n H 2O(X=Si,Ge;M=K,Me 4N,Bu 4N), were synthesized and characterized by IR, UV and 183 W NMR spectrometry. Complex K 4H 12 [Si 2W 14 Nb 10 O 79 ]·13H 2O was determined by XRD to be of Keggin structure. Its crystal belongs to monoclinic space group C2, with a =1 9226(4) nm, b =3 3134(7) nm, c=1 2497(3) nm, D c=3 240 g/cm 3, Z =3, μ =15 886 mm -1 , F (000)=6920, R =0 0565, WR 2=0 0972. It was found that the complex has an excellent anti virus activity to tomato mosaic virus.