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继不久前McCarronⅢ自MoO_3·2H_2O和吡啶制得了[(C_5H_5N)_2MO_t8O_(26)]~(4-)之后,我们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(C_5H_5NH)_4[(C_5H_5N)_2W_(12)O_(38)]·6H_2O。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(C_5H_5N)_(0.85)·WO_3。与Johnson用黄钨酸制备的层状化合物(C_5H_5N)·WO_3属同一物相。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(C_5H_5NH)HW_4O_(13)·3H_2O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H_2W_4O_(13)·nH_2O。
After the [(C 5 H 5 N) 2 MO_ T 8 O 26] ~ (4-) was prepared from MoO 3 · 2H 2 O and pyridine by McCarron Ⅲ recently, we have successfully prepared a colorless Crystal (C_5H_5NH) _4 [(C_5H_5N) _2W_ (12) O_ (38)] · 6H_2O. A yellow by-product was also isolated from the reaction mixture and its composition was analyzed as (C_5H_5N) _ (0.85) .WO_3. The layered compound (C_5H_5N) · WO_3 prepared by Johnson with tungstic acid belongs to the same phase. Powdery tungstic acid placed in anhydrous pyridine for two weeks can be obtained after another chemical formula (C_5H_5NH) HW_4O_ (13) · 3H_2O pyridine compounds, the IR and DTA studies can be initially demonstrated that the compound and powdered tungstate (Microcrystalline), and therefore speculated that the composition of white tungstic acid may be H_2W_4O_ (13) · nH_2O.