（K0.67Rb0.33）2[(UO2)2(Si5O13)]（H2O）结构中的新型微孔框架

IF 1.2 4区化学 Q4 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Structural Chemistry Pub Date : 2025-05-07 DOI:10.1134/S0022476625040018

E. V. Nazarchuk, O. I. Siidra

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引用次数: 0

摘要

在密封的石英安瓿中，用熔体制备了新型铀基硅酸盐（K0.67Rb0.33）2[(UO2)2(Si5O13)](H2O)(1)。斜方晶系的新化合物,Pbca = 14.1909 (4), b = 14.0406 (5), c = 17.9151 (7), V = 3569.6 (2) A3, R1 = 0.03。铀多面体的[Si5O13]6 -层和链形成微孔异多面体框架，其9.63×3.34 Å通道含有碱金属阳离子的混合占据位点。将新化合物的结构与相关的铀酰硅酸盐化合物和矿物进行了比较。

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New Microporous Framework in the Structure of (K0.67Rb0.33)2[(UO2)2(Si5O13)](H2O)

A new uranyl silicate (K_0.67Rb_0.33)₂[(UO₂)₂(Si₅O₁₃)](H₂O) (1) is prepared from the melt in a sealed quartz ampoule. The new compound is orthorhombic, Pbca, a = 14.1909(4), b = 14.0406(5), c = 17.9151(7) Å, V = 3569.6(2) Å³, R1 = 0.03. The [Si₅O₁₃]^6– layers and chains of uranium polyhedra form a microporous heteropolyhedral framework with 9.63×3.34 Å channels containing mixed-occupied sites of alkali metal cations. The structure of the new compound is compared with those of related uranyl silicate compounds and minerals.

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来源期刊

Journal of Structural Chemistry 化学-无机化学与核化学

CiteScore

1.60

自引率

12.50%

发文量

142

审稿时长

8.3 months

期刊介绍： Journal is an interdisciplinary publication covering all aspects of structural chemistry, including the theory of molecular structure and chemical bond; the use of physical methods to study the electronic and spatial structure of chemical species; structural features of liquids, solutions, surfaces, supramolecular systems, nano- and solid materials; and the crystal structure of solids.