| 希土-钼二元杂多酸铵盐的合成和性质研究 |
| PREPARATIONS AND PROPERTIES OF HETE-ROPOLYMOLYBDATES CONTAINING LANTHANOID HETEROATOMS |
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| 摘要: 本文报道了10种希土元素(La、Pr、Nd、Sm、Eu、Gd、Dy,Er、Yb,Y)分别和钼形成的二元杂多酸铵盐的合成方法,确定了合成产物晶体的组成有两种类型,相应的化学式分别表示为:(NH4)3LnMo7O24·nH2O和(NH4)LnMo8027·nH2O,并验证了在溶液中存在Ln:Mo=1:7、1:8、1:14、1:16四种形式的杂多阴离子。此外,根据各种实验的结果,对希土—钼杂多阴离子的形成以及合成产物的稳定性等进行了讨论。 |
| 关键词: 希土 钼 杂多酸盐 合成 |
| 基金项目: |
| Abstract: A series of ammonium salts of the anions LnMo7O24(H2O)n3-(Ln = La, Pr, Nd, Sm, Eu, Gd, Dy) and LnMo8O27(H2O)n3-(Ln = Er, Yb, Y) in solid state have been prepared, while in solution, Ln3+ ions can react with Mo7O246- or Mo8O276- to form heteropolyanions as LnMo7O24(H2O)n3- and Ln(Mo7O24)29- or LnMo8O27(H2O)n3- and Ln(Mo8O27)29-, respectively.Their existence were proved by spectrophotometry.The nature of formation and the condition of preparation of these salts have been investigated by chemical and instrumental methods.In contrast to (NH4)3(LnMo8O27)·nH2O, (NH4)3(LnMo7O24)·nH2O are less stable than the fromer either in solution or in solid state.A probable ex-plaination has been given. |
| Keywords: rare earth molybdenum beteropoly salt synthesis |
| 投稿时间：1987-06-27 |
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| 陈辉勇,陈琼琳,陈寀.希土-钼二元杂多酸铵盐的合成和性质研究[J].无机化学学报,1988,4(4):62-69. |
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