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化学学报
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化学学报 ›› 1991, Vol. 49 ›› Issue (8): 782-787. 上一篇    下一篇

研究论文

K15[(LnO)3(PW9O34)2]·xH2O型杂多酸钾的合成与性质

刘景福;刘钊;王恩波;瞿伦玉   

  1. 东北师范大学化学系
  • 发布日期:1991-08-15

Synthesis and characterization of heteropoly complexes of the type K15[(LnO)3(PW9O34)2]·xH2O

LIU JINGFU;LIU ZHAO;WANG ENBO;JU LUNYU   

  • Published:1991-08-15

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PW9O34^9-阴离子可与镧系元素离子反应生成[(LnO)3(PW9O34)2]^15-型杂多阴离子(Ln=LaCe,Pr,Nd,Sm,Eu,Gd)。^31PNMR测定表明,杂多阴离子中的PW9O34^9-具有A型结构;极谱半波电位、还原电子数及红外光谱测试表明,杂多阴离子中的PW9O34^9-是A,a型异构体。杂多阴离子在水溶液中稳定的pH范围是5.3-8.1,其钾盐的热分解温度约480℃。

关键词: 红外分光光度法, 杂多酸, 杂多酸, 磷酸盐, 极谱分析, 钾化合物, 氧化钕, 水合物, 氧化镧, 氧化镨

K15[(LnO)3(PW9O34)2].xH2O (Ln = La, Ce, Pr, Nd, Sm, Eu or Gd) were prepared from lacunary Na8HPW9O34 and characterized by elemental anal., vibrational and UV spectroscopies. 31P NMR establishes that PW9O349- in heteropolyanions [(LnO)3(PW9O34)2]15- has an A-type structure. Polarog. data indicates that it is an A, a isomer.

Key words: INFRARED SPECTROPHOTOMETRY, HETEROPOLYACID, HETEROPOLYACID, PHOSPHATE, POLAROGRAPHIC ANALYSIS, POTASSIUM COMPOUNDS, NEODYMIUM OXIDE, HYDRATE, LANTHANUM OXIDE, PRASEODYMIUM OXIDE

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