Výsledky vyhledávání - "Roman A. Kayukov"

Copper–lead selenite bromides: a new large family of compounds partly having Cu2+ substructures derivable from kagome nets

Autor: Roman A. Kayukov, Michael S. Kozin, Wulf Depmeier, Vadim M. Kovrugin, Oleg I. Siidra

Publikováno v: Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials. 74:712-724

Extensive experiments in the Pb–Cu–Se–O–Br system at 400°C yielded single crystals of nine new compounds (Cu2+Pb6(SeO3)4Br6, Cu2+Pb2(SeO3)2Br2, Cu2+ 3Pb2.4(SeO3)5Br0.8, Cu2+ 2Pb(SeO3)2Br2, Cu2+ 4Pb(SeO3)4Br2, [Cu2+ 9Pb2O4](Cu+Br2)(SeO3)4Br5,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9de00d49cd5c02fabd6e766555cced66
https://doi.org/10.1107/s2052520618016542

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Microporous uranyl chromates successively formed by evaporation from acidic solution

Autor: Roman A. Kayukov, Oleg I. Siidra, Wulf Depmeier, Evgeny V. Nazarchuk, Sergey N. Bocharov

Publikováno v: Zeitschrift für Kristallographie - Crystalline Materials. 233:1-8

The first microporous framework structures containing uranium and chromium have been synthesized and characterized. Rb2[(UO2)2(CrO4)3(H2O)2](H2O)3 (1) was crystallized from uranyl chromate solution by evaporation. Further evaporation led to increased

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e1120ea0e1f383daedfe052fce7c8d4f
https://doi.org/10.1515/zkri-2017-2059

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Chemical vapor transport and solid-state exchange synthesis of new copper selenite bromides

Autor: Dmitri O. Charkin, Oleg I. Siidra, Roman A. Kayukov, Karim A. Zagidullin

Publikováno v: Solid State Sciences. 64:109-113

A new dimorphic copper selenite bromide, Cu5(SeO3)4Br2 was obtained via chemical transport reactions. α-Cu5(SeO3)4Br2, monoclinic (1m) and β-Cu5(SeO3)4Br2, triclinic (1a) polymorphs were produced simultaneously upon reaction of amorphous, partially

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2b09f1b359e2e1b97692cc33d2588ae5
https://doi.org/10.1016/j.solidstatesciences.2016.12.016

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Porous layered and open-framework mixed-valence copper tellurites

Autor: Oleg I. Siidra, Evgeni W. Nazarchuk, Roman A. Kayukov, Mishel R. Markovski

Publikováno v: Journal of Solid State Chemistry. 243:215-220

Cu+Cl3|[Cu2+2(TeO3)] (1), |Сu+1.7Cl3.8|[Cu2+4O(TeO3)2] (2) and Tl+2[Cu2+2Te6+Te4+6O18] (3) were obtained by CVT and hydrothermal methods in CuCl-CuCl2-TeO2 and Tl2CO3-CuO-TeO2 systems. 1 demonstrates layered topology with pores (1×0.65 nm), whereas

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ea9966f0f2af0a572232fd499111ac22
https://doi.org/10.1016/j.jssc.2016.08.028

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Synthesis and crystal-chemical features of two new uranyl chromates with the structures derived from [(UO2)(T6+O4)(H2O) n ]0 (T = Cr6+, S6+, Se6+, n = 0–2)

Autor: Oleg I. Siidra, Roman A. Kayukov, Evgeny V. Nazarchuk

Publikováno v: Radiochemistry. 58:571-577

Two new chromates of hexavalent uranium, [C3H10N][(UO2)(CrO4)(NO3)] (1) and [C2H8N]2[(UO2)2· (CrO4)2(Cr2O7)](H2O)2 (2), were prepared by a combination of hydrothermal synthesis and isothermal evaporation. Compounds 1 and 2 crystallize in the triclin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2f5711101b82583239b57f2c31c82c36
https://doi.org/10.1134/s1066362216060023

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Isolated Uranyl Chromate and Polychromate Units in Crown Ether Templated Compounds

Autor: Evgeny V. Nazarchuk, Wulf Depmeier, Oleg I. Siidra, Elena V. Sysoeva, Roman A. Kayukov

Publikováno v: European Journal of Inorganic Chemistry. 2014:5495-5498

Two compounds containing isolated uranyl chromate and polychromate units were synthesized through room-temperature reactions of uranyl nitrate, chromium(VI) oxide, and 18-crown-6/15-crown-5 in aqueous solutions. Uranyl chromate with 18-crown-6 consis

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::21bc486b15623dcfaf886f75218451b9
https://doi.org/10.1002/ejic.201402806

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CrVI→CrVTransition in Uranyl Chromium Compounds: Synthesis and High-temperature X-ray Diffraction Study of Cs2[(UO2)2(CrO4)3]

Autor: Sergey V. Krivovichev, Oleg I. Siidra, Evgeny V. Nazarchuk, Roman A. Kayukov, Rimma S. Bubnova

Publikováno v: Zeitschrift für anorganische und allgemeine Chemie. 639:2302-2306

Single crystals of Cs2[(UO2)2(CrO4)3] (1) were obtained by hydrothermal synthesis. The structure of 1 is based upon 2-dimensional uranyl chromate layers with the composition [(UO2)2(CrO4)3]2–. The cesium atoms are located in the interlayer under �

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d9df32a9d1e124e7da30dd5dde9b5ad0
https://doi.org/10.1002/zaac.201300219

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Cr(VI) Trioxide as a Starting Material for the Synthesis of Novel Zero-, One-, and Two-Dimensional Uranyl Dichromates and Chromate-Dichromates

Autor: Roman A. Kayukov, Anna N. Suknotova, Oleg I. Siidra, Evgeny V. Nazarchuk, Sergey V. Krivovichev

Publikováno v: Inorganic Chemistry. 52:4729-4735

Six different dichromate-based uranyl compounds were obtained. Their structures belong to four principally different but related structure types with different dimensionality of basic structural units. The units in Cs2(UO2)(Cr2O7)(NO3)2 (1) and (C6H1

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4d03a459e8a0e86b9cd354d38aaadda
https://doi.org/10.1021/ic400341q

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