新型杂多配合物K_3H_2[GeW_8Mo_3VO_(40)]·4H_2O的合成与晶体结构

The Synthesis and Crystal Structure of Novel Heteropoly Complex K 3H 2 GeW 8Mo 3VO 40 \54H 2O

用分步酸化、分步加料法合成出新型杂多配合物Ｋ３Ｈ２［ＧｅＷ８Ｍｏ３ＶＯ４０］·４Ｈ２Ｏ，并用Ｘ射线单晶衍射法测定其晶体结构．该晶体属单斜晶系，Ｃ２空间群，ａ＝１．８９４４（４）ｎｍ，ｂ＝３．２９２０（７）ｎｍ，ｃ＝１．２４９４（２）ｎｍ，β＝９０．２５（３）°，Ｖ＝７．７９２（４）ｎｍ３，Ｚ＝６．最终偏差因子Ｒ＝０．０６３，ＲＷ＝０．０６７．

K 3H 2 GeW 8Mo 3VO 40 \54H 2O, a novel crystal was synthesized by the stepwise acidification and the stepwise addition of materials. The crystal structure was determined from single crystal X ray diffraction at room temperature. The complex crystallizes in the space group C 2 (monoclinic), with a =1.894 4(4) nm, b =3.292 0(7) nm, c =1.249 4(2) nm, β =90.25(3)°, V =7.792(4) nm 3, Z =6. The final discrepancy factor was R=0.063, R W=0.067.