期刊论文

pH-dependent Synthesis of Octa-nuclear Uranyl-oxalate Network Mediated by U-shaped Linkers

Wu Si

英文

无机材料学报

1000-324X

2020

35

2

243-249

10.15541/jim20190118

National Natural Science Foundation of ChinaNational Natural Science Foundation of China [21671191, 21577144, 11405186]

本校为第一且通讯机构

In this work, we report a novel octa-nuclear uranyl (U8) motif [(UO2)(8)O-4(mu(3)-OH)(2)(mu(2)-OH)(2)](4+) embedded in a uranyl-oxalate coordination polymer (compound 1) based on a U-shaped linker with extra-long xylylene chains for stabilizing the resulting high-nuclear motif through additional cross-linking connectivity. A comparison with dimeric and monomeric uranyl compounds obtained at different pH value from the same hydrothermal system reveals that, solution pH plays a vital role in formation of this octa-nuclear uranyl motif by promoting hydrolysis of uranyl source. Since high similari...

本工作报道了一种含新型八核铀酰(U8)团簇单元([(UO2)8O4(μ3-OH)2(μ2-OH)2] 4+)的草酸铀酰配合物, 该化合物中, U型有机配体链可以增强铀酰之间的交联度, 具有稳定多核铀酰团簇的作用。通过与另外两种含单核和双核的铀酰配位化合物比较, 发现八核铀酰团簇单元的形成是一个pH调控的过程。理化性质分析显示, 荧光、红外、拉曼的信号峰都出现了不同程度的重叠和宽化, 表明八个铀酰离子具有较高的相似度, 这与此多核铀酰团簇的近平面分子构型密切相关。 In this work, we report a novel octa-nuclear uranyl (U8) motif [(UO2)8O4(μ3-OH)2(μ2-OH)2] 4+ embedded in a uranyl-oxalate coordinat...