1－电子还原的混合价α－Dawson型十八钨高氯酸四丁基铵［NBu_4］_3［Cl_2W~ⅤW_（17）^（Ⅵ）O_（62）］的合成和表征

Synthesis and Characterization of α-Dawson Mixed -Valence Tris(tetrabutylammonium) Octadecatungstodiperchlorate

Ｎａ_２ＷＯ_４－醋酐－ＤＭＦ－ＨＣｌ体系在光照条件下加热回流，加入溴化四丁基铵，经重结晶后分离得到蓝色晶体，通过元素分析、红外和紫外光谱、循环伏安、顺磁共振及单晶衍射等方法进行表征，结果表明：这是一个１－电子还原的以ＣｌＯ_４四面体为中心的α－Ｄａｗｓｏｎ型杂多蓝化合物．

The title compound has been prepared by dissolving Na2WO4·2H2O in acetic anhydride-DMF-HCl.The blue crystals were obtained upon adding tetrabutylammonium bromide and being recrystallized from DMSO. The results of elementary analysis,IR,CV,ESR,UV-Vis,and single crystal X-ray diffraction indicate that the title compound is aα-Dawson type,one electron reduced "heteropoly-blue" with a central distorted ClO4 tetrahedron.