pH-dependent Synthesis of Octa-nuclear Uranyl-Oxalate Network Mediated by U-shaped Linkers
Year: 2019
Type: article
Abstract: 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 similarity of eight uranium centers in this nearly planar U8 motif here, overlapping and broadening of signals in fluorescence, infra-red (IR) and Raman spectra can be found.
Source: Journal of Inorganic Materials
DOI: 10.15541/jim20190118
Authors: WU Si, MEI Lei, HU Kong-Qiu, CHAI Zhi-Fang, NIE Chang-Ming, SHI Wei-Qun
Language: English
Subfield: Inorganic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W2979391397