首次合成了具有bicapped-Keggin型结构[PV14O42]9-阴离子的四种稀土盐:H1.5Ln2.5[PV14O42]*nH2O(Ln=La3+、Ce3+、Pr3+、Gd3+),并用化学分析、IR、UV、TG、摩尔电导等方法对其进行了表征.结果表明,四种稀土盐处于杂多阴离子[PV14O42]9-的外界,并且[PV14O42]9-仍基本保持着bicapped-Keggin型结构.
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