Yuting Wei, Weixin Du, Haiying Wang, Xiaoyue Wang, Keqin Shen, Minghui Xiong and Dongdi Zhang
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引用次数: 0
摘要
我们合成了一种基于凯金型[SbW9O33]9-的三元共轭的新型二聚结构，并对其进行了全面表征。与传统的二聚结构不同，(NH4)10[(SbW9O33)2(UO2)2(H2O)2(SbOH)2]-7H2O（{U2Sb4}）化合物具有两个额外的 Sb3+ 阳离子。{U2Sb4}的成功合成体现了杂原子在结构调整中的重要作用。二聚体与水分子和 NH4+ 形成氢键网络。这有望表现出显著的质子传导性。质子传导研究表明，{U2Sb4}是一种与温度和湿度相关的质子导体，在 85 °C 和 85 % RH 条件下，其传导率高达 2.50 × 10-2 S cm-1。
A uranium-bridged dimeric Keggin-type polyoxometalate and its proton conductive properties†
A novel dimeric structure based on trilacunary Keggin-type [SbW9O33]9− was synthesized and comprehensively characterized. Different from the conventional dimeric structures, the compound (NH4)10[(SbW9O33)2(UO2)2(H2O)2(SbOH)2]·7H2O ({U2Sb4}) features two additional Sb3+ cations. The successful synthesis of {U2Sb4} reveals the significant role of heteroatoms in structural modulation. The dimer forms a hydrogen-bonded network with water molecules and NH4+ and is therefore expected to exhibit remarkable proton conductivity. Proton conduction studies revealed that {U2Sb4} was a temperature and humidity-dependent proton conductor with conductivity reaching up to 2.50 × 10−2 S cm−1 at 85 °C and 85% RH.
期刊介绍：
Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.
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