化学学报 ›› 1987, Vol. 45 ›› Issue (3): 227-231. 上一篇    下一篇

研究论文

粉状白钨酸研究IX: 含W-N键的钨同多酸盐[Py2W12O38]^4^-的合成

金松林;洪波;顾翼东   

  1. 复旦大学化学系
  • 发布日期:1987-03-15

Studies on white powdery tungstic acid IX: Preparation of isopolytungstates with W-N bond [Py2W12038]^4^-

JIN SONGLIN;HONG BO;GU YIDONG   

  • Published:1987-03-15

通过粉状白钨酸与吡啶水溶液反应成功地制备了一种无色的晶体(C5H5NH)4[(C5H5N)2W12O38].6H2O.从反应混合物中还分离到一个黄色的副产物,其组成经分析为(C5H5N)0.85.WO3.粉状白钨酸在无水吡啶中放置两周后可得到另一种化学式为(C5H5NH)HW4O13.3H2O的吡啶化合物,经IR和DTA研究可初步说明该化合物与粉状白钨酸(微晶态)之间的联系,并因此推测白钨酸的组成可能为H2W4O13.nH2O.

关键词: 吡啶 P, 化学键, 同多酸, 钨酸盐

Following the recent preparation of [(py)N)2Mo8O26]4- from MoO3.2H2O and pyridine by E. M. McCarron III et al. (1984), (pyH)4[(py)2W12O38].6H2O, a colorless crystalline compound, was prepared by the reaction of white powdery tungstic acid with an aqueous solution of pyridine. A yellow byproduct was also isolated from the reaction mixture The composition of that compound was analyzed as (py)0.85WO3, close to (py).WO3, an interlayer compound prepared by J. W. Johnson (1981) using yellow tungstic oxide hydrate. Suspension of white powdery tungstic acid in anhydrous pyridine yields on standing for 2 wk white (pyH)HW4O13.3H2O. IR and DTA studies revealed the connection between that pyridine polytungstate and white powdery tungstic acid (microcryst.), whose composition may thereby be assigned as H2W4O13.nH2O.

Key words: PYRIDINE P, CHEMICAL BONDS, ISOPOLYACID, TUNGSTATE

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