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扩展的五氟铀酸盐：β-NaUF和β-NaUF·H₂O的水热合成与表征

Expanding pentafluorouranates: hydrothermal synthesis and characterization of β-NaUF and β-NaUF·HO.

作者信息

Chemey Alexander T, Sperling Joseph M, Albrecht-Schmitt Thomas E

机构信息

Department of Chemistry and Biochemistry, Florida State University Tallahassee FL 32306 USA

出版信息

RSC Adv. 2018 Aug 13;8(50):28642-28648. doi: 10.1039/c8ra05780j. eCollection 2018 Aug 7.

DOI:10.1039/c8ra05780j
PMID:35548398
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9084403/
Abstract

Two new sodium uranium(iv) pentafluorides were synthesized from uranium dioxide, HF, and NaF using mild hydrothermal conditions. β-NaUF·HO has greater lattice energy than previously-known α-NaUF·HO and possesses lower symmetry with the latter compound being orthorhombic, whereas β-NaUF·HO is monoclinic. Trigonal β-NaUF also possesses different connectivity between the [UF ] building units than the α-phase, with higher symmetry and greater lattice energy than orthorhombic α-NaUF. The single crystal absorption spectra of these compounds are also reported and compared.

摘要

在温和水热条件下，利用二氧化铀、氢氟酸和氟化钠合成了两种新型五氟铀（IV）酸钠。β-NaUF·HO的晶格能比已知的α-NaUF·HO更大，对称性更低，后者为正交晶系，而β-NaUF·HO为单斜晶系。三角晶系的β-NaUF在[UF ]结构单元之间的连接性也与α相不同，其对称性高于正交晶系的α-NaUF，晶格能也更大。还报道并比较了这些化合物的单晶吸收光谱。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f7d/9084403/9ca0ee939062/c8ra05780j-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f7d/9084403/11cec9fcc731/c8ra05780j-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f7d/9084403/a377e1023711/c8ra05780j-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f7d/9084403/81918d283801/c8ra05780j-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f7d/9084403/9010f91dc6d0/c8ra05780j-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f7d/9084403/9ca0ee939062/c8ra05780j-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f7d/9084403/11cec9fcc731/c8ra05780j-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f7d/9084403/a377e1023711/c8ra05780j-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f7d/9084403/81918d283801/c8ra05780j-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f7d/9084403/9010f91dc6d0/c8ra05780j-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6f7d/9084403/9ca0ee939062/c8ra05780j-f5.jpg

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