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Effect of solution acidity on the crystallization of polychromates in uranyl-bearing systems : Synthesis and crystal structures of Rb2[(UO2)(Cr2O7)(NO3)2] and two new polymorphs of Rb2Cr3O10. / Nazarchuk, Evgeny V.; Siidra, Oleg I.; Charkin, Dmitry O.; Kalmykov, Stepan N.; Kotova, Elena L.

в: Zeitschrift fur Kristallographie - Crystalline Materials, Том 236, № 1-2, 26.01.2021, стр. 11-21.

Результаты исследований: Научные публикации в периодических изданияхстатьяРецензирование

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Nazarchuk, Evgeny V. ; Siidra, Oleg I. ; Charkin, Dmitry O. ; Kalmykov, Stepan N. ; Kotova, Elena L. / Effect of solution acidity on the crystallization of polychromates in uranyl-bearing systems : Synthesis and crystal structures of Rb2[(UO2)(Cr2O7)(NO3)2] and two new polymorphs of Rb2Cr3O10. в: Zeitschrift fur Kristallographie - Crystalline Materials. 2021 ; Том 236, № 1-2. стр. 11-21.

BibTeX

@article{e8bc9f99602945abb57732e0e813b3ee,
title = "Effect of solution acidity on the crystallization of polychromates in uranyl-bearing systems: Synthesis and crystal structures of Rb2[(UO2)(Cr2O7)(NO3)2] and two new polymorphs of Rb2Cr3O10",
abstract = "Three new rubidium polychromates, Rb2[(UO2) (Cr2O7)(NO3)2] (1), γ-Rb2Cr3O10 (2) and δ-Rb2Cr3O10 (3) were prepared by combination of hydrothermal treatment at 220 °C and evaporation of aqueous solutions under ambient conditions. Compound 1 is monoclinic, P21/c, a = 13.6542(19), b = 19.698(3), c = 11.6984(17) {\AA}, β = 114.326(2)°, V = 2867.0(7) {\AA}3, R1 = 0.040; 2 is hexagonal, P63/m, a = 11.991(2), c = 12.828(3) {\AA}, γ = 120°, V = 1597.3(5) {\AA}3, R1 = 0.031; 3 is monoclinic, P21/n, a = 7.446(3), b = 18.194(6), c = 7.848(3) {\AA}, β = 99.953(9)°, V = 1047.3(7) {\AA}3, R1 = 0.037. In the crystal structure of 1, UO8 bipyramids and NO3 groups share edges to form [(UO2)(NO3)2] species which share common corners with dichromate Cr2O7 groups producing novel type of uranyl dichromate chains [(UO2)(Cr2O7)(NO3)2]2−. In the structures of new Rb2Cr3O10 polymorphs, CrO4 tetrahedra share vertices to form Cr3O102− species. The trichromate groups are aligned along the 63 screw axis forming channels running in the ab plane in the structure of 2. The Rb cations reside between the channels and in their centers completing the structure. The trichromate anions are linked by the Rb+ cations into a 3D framework in the structure of 3. Effect of solution acidity on the crystallization of polychromates in uranyl-bearing systems is discussed.",
keywords = "Hexavalent chromium, Polychromates, Rubidium, Uranium, URANIUM, TOPOLOGY, BIDENTATE COORDINATION, hexavalent chromium, CHEMICAL FEATURES, MOLYBDATES, CHROMATES, RB, TUNGSTATES, rubidium, CHEMISTRY, polychromates, uranium, CATION",
author = "Nazarchuk, {Evgeny V.} and Siidra, {Oleg I.} and Charkin, {Dmitry O.} and Kalmykov, {Stepan N.} and Kotova, {Elena L.}",
note = "Funding Information: Technical support by the SPbSU X-ray Diffraction and Microscopy and Microanalysis Resource Centers is gratefully acknowledged. Publisher Copyright: {\textcopyright} 2021 De Gruyter. All rights reserved. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",
year = "2021",
month = jan,
day = "26",
doi = "10.1515/zkri-2020-0078",
language = "English",
volume = "236",
pages = "11--21",
journal = "Zeitschrift fur Kristallographie - Crystalline Materials",
issn = "2194-4946",
publisher = "De Gruyter",
number = "1-2",

}

RIS

TY - JOUR

T1 - Effect of solution acidity on the crystallization of polychromates in uranyl-bearing systems

T2 - Synthesis and crystal structures of Rb2[(UO2)(Cr2O7)(NO3)2] and two new polymorphs of Rb2Cr3O10

AU - Nazarchuk, Evgeny V.

AU - Siidra, Oleg I.

AU - Charkin, Dmitry O.

AU - Kalmykov, Stepan N.

AU - Kotova, Elena L.

N1 - Funding Information: Technical support by the SPbSU X-ray Diffraction and Microscopy and Microanalysis Resource Centers is gratefully acknowledged. Publisher Copyright: © 2021 De Gruyter. All rights reserved. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/1/26

Y1 - 2021/1/26

N2 - Three new rubidium polychromates, Rb2[(UO2) (Cr2O7)(NO3)2] (1), γ-Rb2Cr3O10 (2) and δ-Rb2Cr3O10 (3) were prepared by combination of hydrothermal treatment at 220 °C and evaporation of aqueous solutions under ambient conditions. Compound 1 is monoclinic, P21/c, a = 13.6542(19), b = 19.698(3), c = 11.6984(17) Å, β = 114.326(2)°, V = 2867.0(7) Å3, R1 = 0.040; 2 is hexagonal, P63/m, a = 11.991(2), c = 12.828(3) Å, γ = 120°, V = 1597.3(5) Å3, R1 = 0.031; 3 is monoclinic, P21/n, a = 7.446(3), b = 18.194(6), c = 7.848(3) Å, β = 99.953(9)°, V = 1047.3(7) Å3, R1 = 0.037. In the crystal structure of 1, UO8 bipyramids and NO3 groups share edges to form [(UO2)(NO3)2] species which share common corners with dichromate Cr2O7 groups producing novel type of uranyl dichromate chains [(UO2)(Cr2O7)(NO3)2]2−. In the structures of new Rb2Cr3O10 polymorphs, CrO4 tetrahedra share vertices to form Cr3O102− species. The trichromate groups are aligned along the 63 screw axis forming channels running in the ab plane in the structure of 2. The Rb cations reside between the channels and in their centers completing the structure. The trichromate anions are linked by the Rb+ cations into a 3D framework in the structure of 3. Effect of solution acidity on the crystallization of polychromates in uranyl-bearing systems is discussed.

AB - Three new rubidium polychromates, Rb2[(UO2) (Cr2O7)(NO3)2] (1), γ-Rb2Cr3O10 (2) and δ-Rb2Cr3O10 (3) were prepared by combination of hydrothermal treatment at 220 °C and evaporation of aqueous solutions under ambient conditions. Compound 1 is monoclinic, P21/c, a = 13.6542(19), b = 19.698(3), c = 11.6984(17) Å, β = 114.326(2)°, V = 2867.0(7) Å3, R1 = 0.040; 2 is hexagonal, P63/m, a = 11.991(2), c = 12.828(3) Å, γ = 120°, V = 1597.3(5) Å3, R1 = 0.031; 3 is monoclinic, P21/n, a = 7.446(3), b = 18.194(6), c = 7.848(3) Å, β = 99.953(9)°, V = 1047.3(7) Å3, R1 = 0.037. In the crystal structure of 1, UO8 bipyramids and NO3 groups share edges to form [(UO2)(NO3)2] species which share common corners with dichromate Cr2O7 groups producing novel type of uranyl dichromate chains [(UO2)(Cr2O7)(NO3)2]2−. In the structures of new Rb2Cr3O10 polymorphs, CrO4 tetrahedra share vertices to form Cr3O102− species. The trichromate groups are aligned along the 63 screw axis forming channels running in the ab plane in the structure of 2. The Rb cations reside between the channels and in their centers completing the structure. The trichromate anions are linked by the Rb+ cations into a 3D framework in the structure of 3. Effect of solution acidity on the crystallization of polychromates in uranyl-bearing systems is discussed.

KW - Hexavalent chromium

KW - Polychromates

KW - Rubidium

KW - Uranium

KW - URANIUM

KW - TOPOLOGY

KW - BIDENTATE COORDINATION

KW - hexavalent chromium

KW - CHEMICAL FEATURES

KW - MOLYBDATES

KW - CHROMATES

KW - RB

KW - TUNGSTATES

KW - rubidium

KW - CHEMISTRY

KW - polychromates

KW - uranium

KW - CATION

UR - http://www.scopus.com/inward/record.url?scp=85100491942&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/1c267a81-4d24-3450-92b4-7cd4f2f765e0/

U2 - 10.1515/zkri-2020-0078

DO - 10.1515/zkri-2020-0078

M3 - Article

AN - SCOPUS:85100491942

VL - 236

SP - 11

EP - 21

JO - Zeitschrift fur Kristallographie - Crystalline Materials

JF - Zeitschrift fur Kristallographie - Crystalline Materials

SN - 2194-4946

IS - 1-2

ER -

ID: 74421581