ChemInform Abstract: Crystal Structure of (NH4)2UO2 (SeO4)2×3H2O.

Mikhaǐlov, Yu. N.; Gorbunova, Yu. E.; Сережкина, Л. Б.; Demchenko, E. A.; Сережкин, В. Н.

doi:10.1002/chin.199810002

Cited by 2 publications

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“…4 ] nÀ tetrahedra (T¼S, Se, P, As). They have been observed first in the structure of Mn[(UO 2 ) (SO 4 ) 2 (H 2 O)](H 2 O) 5 [39] and later in a number of amine-templated uranyl sulfates [40][41][42][43][44][45] [50]. Fig.…”

Section: Topological Analysismentioning

confidence: 99%

Topologically and geometrically flexible structural units in seven new organically templated uranyl selenates and selenite–selenates

Gurzhiy

Kovrugin

Tyumentseva

et al. 2015

Journal of Solid State Chemistry

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a b s t r a c tSingle crystals of seven novel uranyl oxysalts of selenium with protonated methylamine molecules, [C 2 Their crystal structures have been solved by direct methods and their uranyl selenate and selenite-selenate units investigated using black-and-white graphs from the viewpoints of topology of interpolyhedral linkages and isomeric variations. The crystal structure of IV is based upon complex layers with unique topology, which has not been observed previously in uranyl selenates. Investigations of the statistics and local distribution of the U-O br -Se bond angles demonstrates that shorter angles associate with undulations, whereas larger angles correspond to planar areas of the uranyl selenite layers.

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Section: Topological Analysismentioning

confidence: 99%

Topologically and geometrically flexible structural units in seven new organically templated uranyl selenates and selenite–selenates

Gurzhiy

Kovrugin

Tyumentseva

et al. 2015

Journal of Solid State Chemistry

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“…-Structural data not available; 2 -assumed to be the structural analog of 174; 3 -assumed to be the structural analog of 176;4 -assumed to be the structural analog of 178;5 -assumed to be the structural analog of 188.…”

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confidence: 99%

Organically Templated Uranyl Sulfates and Selenates: Structural Complexity and Crystal Chemical Restrictions for Isotypic Compounds Formation

Durova,

Kuporev,

Gurzhiy

2023

IJMS

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This paper reviews the state of the art in the structural chemistry of organically templated uranyl sulfates and selenates, which are considered as the most representative groups of U-bearing synthetic compounds. In total, there are 194 compounds known for both groups, the crystal structures of which include 84 various organic molecules. Structural studies and topological analysis clearly indicate complex crystal chemical limitations in terms of the isomorphic substitution implementation, since the existence of isotypic phases has to date been confirmed only for 24 compounds out of 194, which is slightly above 12%. The structural architecture of the entire compound depends on the combination of the organic and oxyanion parts, changes in which are sometimes realized even while maintaining the topology of the U-bearing complex. An increase in the size of the hydrocarbon part and number of charge functional groups of the organic cation leads to the formation of rare and more complex topologies. In addition, the crystal structures of two novel uranyl sulfates and one uranyl selenate, templated by isopropylammonium cations, are reported.

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ChemInform Abstract: Crystal Structure of (NH₄)₂UO₂ (SeO₄)₂×3H₂O.

Cited by 2 publications

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Topologically and geometrically flexible structural units in seven new organically templated uranyl selenates and selenite–selenates

Topologically and geometrically flexible structural units in seven new organically templated uranyl selenates and selenite–selenates

Organically Templated Uranyl Sulfates and Selenates: Structural Complexity and Crystal Chemical Restrictions for Isotypic Compounds Formation

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