化学学报 ›› 1989, Vol. 47 ›› Issue (8): 800-803. 上一篇    下一篇

研究论文

4:2钼、钨过氧配合物的制备、结构及其氧化还原分解行为

蒋安仁;蒋彤;庞震   

  1. 复旦大学化学系
  • 发布日期:1989-08-15

Preparation, structure and behaviour of peroxymolybdate [K4Mo4O12(O2)2] and peroxytungstate [K4W4O12(O2)2.4H2O]

JIANG ANREN;JIANG TONG;PANG ZHEN   

  • Published:1989-08-15

本文作者曾在用过钨酸分解法制备钨酸的过程中发现, 溶液中W与O2^2^-之比始终为2:1, 这一事实说明溶液中有2:1金属过氧配合物形成, 2:1铂过氧络合物[Mo4O12(O2)2]^4^-文献上已有记载, 但类似的钨配合物尚未见报道。本文制备了这二种配合物, 对比它们的红外和Raman光谱, 并用循环伏安法, 恒电位电解法探讨它们的氧化还原分解体系。

关键词: 氧化还原反应, 红外分光光度法, 钼络合物, 过氧化物, 恒电位器, 循环伏安法, 钨络合物, 分解电位, 拉曼光谱法

K4Mo4O12(O2)2 and K4W4O12(O2)2.4H2O were prepared from K2MoO4 or K2WO4, resp., and H2O2 at pH 7.3. The products were characterized by IR, Raman and cyclic voltammetry studies. Both compounds were reduced at a Pt electrode vs. SCE at E1 = 0.317, 0.172 V, resp. and E2 = 0.226, <-0.2 V, resp. They were oxidized at E3 = 0.862, 0.786 V, resp. The Mo compound decomposed after a 1-electron reduction Both compounds decomposed after the 4-electron oxidation at E3.

Key words: OXIDATION REDUCTION REACTION, INFRARED SPECTROPHOTOMETRY, MOLYBDENUM COMPLEX, PEROXIDE, POTENTIOSTAT, CYCLOVOLTAMGRAPH, TUNGSTEN COMPLEX, DECOMPOSITION ELECTRIC POTENTIAL, RAMAN SPECTROMETRY

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