Crystal Structure of New Iodacetatouranylates R[UO2(CH2ICOO)3]2·2CH2ICOOH·4H2O (R = Sr or Ba)

IF 0.9 Q4 CHEMISTRY, INORGANIC & NUCLEAR

Radiochemistry Pub Date : 2024-10-06 DOI:10.1134/S1066362224040015

L. B. Serezhkina, M. S. Grigoriev, D. S. Mitinа, V. N. Serezhkin

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Abstract

Synthesis, IR spectroscopic, and X-ray diffraction studies of R[UO₂(mia)₃]₂·2Hmia·4H₂O crystals, where R = Sr²⁺ (I) or Ba²⁺ (II), and mia is the monoiodacetate ion CH₂ICOO⁻, have been carried out. The [UO₂(mia)₃]^– complexes correspond to the crystal chemical formula A(B⁰¹)₃, where A = UO₂²⁺, B⁰¹ = mia. It has been established that a common feature of I and II is the presence of trinuclear electrically neutral clusters {R[UO₂(mia)₃]₂(Hmia)₂(H₂O)₂}. At the centers of the clusters there are trigonal RO₈ dodecahedra; half of their oxygen atoms belong to four different mia anions of two [UO₂(mia)₃]^– complexes. In addition, each R atom coordinates the oxygen atoms of two water molecules and the carbonyl oxygen atoms of two Hmia molecules. Using the method of molecular Voronoi–Dirichlet polyhedra, an analysis of noncovalent interactions in the structure of I was carried out.

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新型碘乙酰鸟苷酸盐 R[UO2(CH2ICOO)3]2-2CH2ICOOH-4H2O 的晶体结构（R = Sr 或 Ba）

对 R[UO2(mia)3]2-2Hmia-4H2O 晶体（其中 R = Sr2+ (I) 或 Ba2+ (II)，mia 为单碘乙酸根离子 CH2ICOO-）进行了合成、红外光谱和 X 射线衍射研究。UO2(mia)3]- 复合物的晶体化学式为 A(B01)3，其中 A = UO22+，B01 = mia。已确定 I 和 II 的共同特征是存在三核电中性簇{R[UO2(mia)3]2(Hmia)2(H2O)2}。簇的中心是 RO8 十二面体三面体；其中一半的氧原子属于两个[UO2(mia)3]- 复合物的四个不同的 mia 阴离子。此外，每个 R 原子还与两个水分子的氧原子和两个 Hmia 分子的羰基氧原子配位。利用分子 Voronoi-Dirichlet 多面体的方法，对 I 结构中的非共价相互作用进行了分析。

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来源期刊

Radiochemistry CHEMISTRY, INORGANIC & NUCLEAR-

CiteScore

1.30

自引率

33.30%

发文量

期刊介绍： Radiochemistry is a journal that covers the theoretical and applied aspects of radiochemistry, including basic nuclear physical properties of radionuclides; chemistry of radioactive elements and their compounds; the occurrence and behavior of natural and artificial radionuclides in the environment; nuclear fuel cycle; radiochemical analysis methods and devices; production and isolation of radionuclides, synthesis of labeled compounds, new applications of radioactive tracers; radiochemical aspects of nuclear medicine; radiation chemistry and after-effects of nuclear transformations.