Výsledky vyhledávání - "Oleg I. Siidra"

Akademický článek

U(VI) Coordination Modes in Complex Uranium Silicates: Cs[(UO6)2(UO2)9(Si2O7)F] and Rb2[(PtO4)(UO2)5(Si2O7)]

Autor: Evgeny V. Nazarchuk, Oleg I. Siidra, Dmitri O. Charkin, Yana G. Tagirova

Publikováno v: Chemistry, Vol 4, Iss 4, Pp 1515-1523 (2022)

Crystals of two new inorganic uranyl silicates, Cs[(UO6)2(UO2)9(Si2O7)F] (1) and Rb2[(PtO4)(UO2)5(Si2O7)] (2), were produced from melts in evacuated silica tubes. Their structures have been solved by direct methods: 1 is trigonal, P-31c, a = 10.2040(

Externí odkaz: https://doaj.org/article/da06fe9c41d847ec8e7e3acd8cf6515c

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Akademický článek

Framework Uranyl Silicates: Crystal Chemistry and a New Route for the Synthesis

Autor: Evgeny V. Nazarchuk, Oleg I. Siidra, Dmitri O. Charkin, Yana G. Tagirova

Publikováno v: Materials, Vol 16, Iss 11, p 4153 (2023)

To date, uranyl silicates are mostly represented by minerals in nature. However, their synthetic counterparts can be used as ion exchange materials. A new approach for the synthesis of framework uranyl silicates is reported. The new compounds Rb2[(UO

Externí odkaz: https://doaj.org/article/1c90bbcb9b374a77a4dc75d47747ff36

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Akademický článek

The Chemistry, Recrystallization and Thermal Expansion of Brannerite from Akchatau, Kazakhstan

Autor: Ruiqi Chen, Oleg I. Siidra, Vera A. Firsova, Angel Arevalo-Lopez, Marie Colmont, Valery L. Ugolkov, Vladimir N. Bocharov

Publikováno v: Materials, Vol 16, Iss 4, p 1719 (2023)

Numerous studies expose the potential of brannerite to become a good matrix, concentrating fission products and actinides. Minerals can complement the data collected from the synthetic materials and offer an advantage of a long-time exposure to radia

Externí odkaz: https://doaj.org/article/44b7f3b32fbf414e8d8de16347c0594a

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Akademický článek

Expanding the Averievite Family, (MX)Cu5O2(T5+O4)2 (T5+ = P, V; M = K, Rb, Cs, Cu; X = Cl, Br): Synthesis and Single-Crystal X-ray Diffraction Study

Autor: Ilya V. Kornyakov, Victoria A. Vladimirova, Oleg I. Siidra, Sergey V. Krivovichev

Publikováno v: Molecules, Vol 26, Iss 7, p 1833 (2021)

Averievite-type compounds with the general formula (MX)[Cu5O2(TO4)], where M = alkali metal, X = halogen and T = P, V, have been synthesized by crystallization from gases and structurally characterized for six different compositions: 1 (M = Cs; X = C

Externí odkaz: https://doaj.org/article/de56627dc9f3468f8a8a64891b5511b9

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Akademický článek

Successive Crystallization of Organically Templated Uranyl Sulfates: Synthesis and Crystal Structures of [pyH](H3O)[(UO2)3(SO4)4(H2O)2], [pyH]2[(UO2)6(SO4)7(H2O)], and [pyH]2[(UO2)2(SO4)3]

Autor: Evgeny V. Nazarchuk, Dmitri O. Charkin, Oleg I. Siidra

Publikováno v: ChemEngineering, Vol 5, Iss 1, p 5 (2021)

Three new uranyl sulfates, [pyH](H3O)[(UO2)3(SO4)4(H2O)2] (1), [pyH]2[(UO2)6(SO4)7(H2O)] (2), and [pyH]2[(UO2)2(SO4)3] (3), were produced upon hydrothermal treatment and successive isothermal evaporation. 1 is monoclinic, P21/c, a = 14.3640(13), b =

Externí odkaz: https://doaj.org/article/b0cd79b5183e4d9ab816451b5da57150

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Akademický článek

Complex Uranyl Dichromates Templated by Aza-Crowns

Autor: Oleg I. Siidra, Evgeny V. Nazarchuk, Dmitry O. Charkin, Stepan N. Kalmykov, Anastasiya I. Zadoya

Publikováno v: Crystals, Vol 8, Iss 12, p 462 (2018)

Three new uranyl dichromate compounds templated by aza-crown templates were obtained at room temperature by evaporation from aqueous solutions: (H2diaza-18-crown-6)2[(UO2)2(Cr2O7)4(H2O)2](H2O)3 (1), (H4[15]aneN4)[(UO2)2(CrO4)2(Cr2O7)2(H2O)] (H2O)3.5

Externí odkaz: https://doaj.org/article/29843f1cb8a449abac68fc476ed7b8ec

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Akademický článek

Uranyl Sulfate Nanotubules Templated by N-phenylglycine

Autor: Oleg I. Siidra, Evgeny V. Nazarchuk, Dmitry O. Charkin, Nikita V. Chukanov, Wulf Depmeier, Sergey N. Bocharov, Mikhail I. Sharikov

Publikováno v: Nanomaterials, Vol 8, Iss 4, p 216 (2018)

The synthesis, structure, and infrared spectroscopy properties of the new organically templated uranyl sulfate Na(phgH+)7[(UO2)6(SO4)10](H2O)3.5 (1), obtained at room temperature by evaporation from aqueous solution, are reported. Its structure conta

Externí odkaz: https://doaj.org/article/12fab411607145d8845ba423c52b004c

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A contribution to the perrhenate crystal chemistry: the crystal structures of new CdTh[MoO4]3-type compounds

Autor: Dmitri O. Charkin, Pavel A. Chachin, Evgeni V. Nazarchuk, Oleg I. Siidra

Publikováno v: Zeitschrift für Kristallographie - Crystalline Materials. 238:1-5

Singe crystals of four new A I M II[ReO4]3 perrhenates (A I = Na, M II = Pb; A I = Na, M II = Sr, Ag, K) have been prepared from the respective A I[ReO4] and M II[ReO4]2 perrhenates using melt and solution evaporation techniques. All new compounds be

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::efee208a206d343cbc8b18a575175f8e
https://doi.org/10.1515/zkri-2022-0043

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