铀的混合配体氟化物络合物的结构化学性质

IF 2.1 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY Structural Chemistry Pub Date : 2024-07-15 DOI:10.1007/s11224-024-02322-4
Ruven L. Davidovich, Evgeny A. Goreshnik
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引用次数: 0

摘要

通过单晶 X 射线衍射方法系统研究和讨论了铀酰混合配体硫化物、硒化物、磷化物、砷化物和铬化物氟化物络合物的晶体结构,以及中性供体配体的混合配体羧基氟化物和混合配体氟化物络合物的晶体结构。确定了铀酰混合配体氟化物配合物结构的晶体化学特征:铀酰混合配体氟化物配合物结构中六价铀原子的配位多面体(除三个六方双锥配合物外)具有五方双锥结构:铀酰基团的氧原子位于五方双锥的垂直轴上,垂直于五个原子所在的赤道面。在铀酰混合配体氟化物络合物的二聚体和聚合物链中(有一种化合物除外,二聚体络合物中的共同桥是氧原子),铀酰单元通过氟化物桥连接在一起。含有 O-供体原子的无机和有机配体将二聚体和聚合物链结合成层和三维形式。
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Structural chemistry of mixed-ligand fluoride complexes of uranyl

The crystal structures of mixed-ligand sulfato-, selenato-, phosphato-, arsenato-, and chromato-fluoride complexes of uranyl and of mixed-ligand carboxylato-fluoride and mixed-ligand fluoride complexes with neutral donor ligands studied by the single-crystal X-ray diffraction method were systematized and discussed. The crystal chemical features of the structures of the mixed-ligand fluoride complexes of uranyl were determined: the coordination polyhedron of the hexavalent uranium atom in the structures of the mixed-ligand fluoride complexes of uranyl (except for three hexagonal-bipyramidal complexes) has a pentagonal-bipyramidal structure: the oxygen atoms of the uranyl group are located on the vertical axis of the pentagonal bipyramid, perpendicular to the equatorial plane in which five atoms are located. In dimeric and polymeric chains of mixed-ligand fluoride complexes of uranyl (with the exception of one compound in which the common bridge in the dimer complex is oxygen atoms), the uranyl units are linked via fluoride bridges. Inorganic and organic ligands, which contained O-donor atoms, combine dimers and polymer chains into layers and three-dimensional formation.

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来源期刊
Structural Chemistry
Structural Chemistry 化学-化学综合
CiteScore
3.80
自引率
11.80%
发文量
227
审稿时长
3.7 months
期刊介绍: Structural Chemistry is an international forum for the publication of peer-reviewed original research papers that cover the condensed and gaseous states of matter and involve numerous techniques for the determination of structure and energetics, their results, and the conclusions derived from these studies. The journal overcomes the unnatural separation in the current literature among the areas of structure determination, energetics, and applications, as well as builds a bridge to other chemical disciplines. Ist comprehensive coverage encompasses broad discussion of results, observation of relationships among various properties, and the description and application of structure and energy information in all domains of chemistry. We welcome the broadest range of accounts of research in structural chemistry involving the discussion of methodologies and structures,experimental, theoretical, and computational, and their combinations. We encourage discussions of structural information collected for their chemicaland biological significance.
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