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Nazarchuk EV, Charkin DO, Kalmykov SN, Siidra OI. Structural topology of uranyl chromate-dichromates: Preparation and crystal structures of [dabcoH2][(UO2)(CrO4)(Cr2O7)](H2O)2, [dmedaH2][(UO2)(CrO4)(Cr2O7)](H2O) and [pyH]4[(UO2)(CrO4)2(Cr2O7)]. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129494] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Nazarchuk EV, Siidra OI, Charkin DO, Kalmykov SN, Kotova EL. 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. Z KRIST-CRYST MATER 2021. [DOI: 10.1515/zkri-2020-0078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
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,
P
2
1
/
c
$P{2}_{1}/c$
, a = 13.6542(19), b = 19.698(3), c = 11.6984(17) Å, β = 114.326(2)°, V = 2867.0(7) Å3, R
1 = 0.040; 2 is hexagonal,
P
6
3
/
m
$P{6}_{3}/m$
, a = 11.991(2), c = 12.828(3) Å, γ = 120°, V = 1597.3(5) Å3, R
1 = 0.031; 3 is monoclinic,
P
2
1
/
n
$P{2}_{1}/n$
, a = 7.446(3), b = 18.194(6), c = 7.848(3) Å, β = 99.953(9)°, V = 1047.3(7) Å3, R
1 = 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 Cr3O10
2− 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.
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Affiliation(s)
- Evgeny V. Nazarchuk
- Department of Crystallography , St. Petersburg State University , University Emb. 7/9, 199034 St. Petersburg , Russia
| | - Oleg I. Siidra
- Department of Crystallography , St. Petersburg State University , University Emb. 7/9, 199034 St. Petersburg , Russia
- Kola Science Center, Russian Academy of Sciences , Apatity, 184200 Murmansk Region , Russia
| | - Dmitry O. Charkin
- Department of Chemistry , Moscow State University , Leninskie Gory 1, 119991 Moscow , Russia
| | - Stepan N. Kalmykov
- Department of Chemistry , Moscow State University , Leninskie Gory 1, 119991 Moscow , Russia
| | - Elena L. Kotova
- St. Petersburg Mining University , 21st Line , St. Petersburg 199106 , Russia
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Nazarchuk EV, Charkin DO, Kozlov DV, Siidra OI, Kalmykov SN. Topological analysis of the layered uranyl compounds bearing slabs with UO2:TO4 ratio of 2:3. RADIOCHIM ACTA 2019. [DOI: 10.1515/ract-2019-3183] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Nine new templated uranyl sulfates and selenates, [(H9O4)2(H2O)][(UO2)2(SO4)3(H2O)2] (H9US), [(C5H7 NO)2(H2O)][(UO2)2(SeO4)3(H2O)2](H2O) (OUSe), [C6H6N3][H5O2] [(UO2)2(SeO4)3(H2O)] (BH5USe), [C6H6N3][H7O3][(UO2)2(SO4)3 (H2O)](H2O) (BH7US), [C6H16N][H5O2][(UO2)2(SeO4)3(H2O)] (TeH5USe), [C6H18N2][(UO2)2(SO4)3(H2O)] (TmUS), [H5O2]2 [(UO2)2(SeO4)3(H2O)](H2O) (H5USe-1), [H5O2]2[(UO2)2(SeO4)3 (H2O)2](H2O)9 (H5USe-2), and [C4H14N2][(UO2)2(SeO4)3(H2O)](H2O) (DmUSe) have been prepared by isothermal evaporation of aqueous solutions containing extra sulfuric or selenic acid. Their crystal structures can be considered as organo-inorganic hybrids constructed of alternating [(UO2)2 (TO4)3(H2O)
n
]2− slabs (T = Se6+, S6+, n = 1, 2) and layers containing templating organic moieties and/or hydronium ions and water molecules. The organic and inorganic parts of the structures are linked by multiple hydrogen bonds. Besides structure description, we offer topological analysis of the inorganic fragments with UO2:TO4 ratio of 2:3 as modular units resulting from self-assembly of fundamental chains formed by [(UO2)2(TO4)2] tetramers and TO4 tetrahedra.
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Affiliation(s)
- Evgeny V. Nazarchuk
- Department of Crystallography , Saint-Petersburg State University , University emb. 7/9 , St. Petersburg 199034 , Russia
| | - Dmitri O. Charkin
- Department of Chemistry , Moscow State University , GSP-1 , Moscow 119991 , Russia
| | - Dmitri V. Kozlov
- Department of Chemistry , Moscow State University , GSP-1 , Moscow 119991 , Russia
| | - Oleg I. Siidra
- Department of Crystallography , Saint-Petersburg State University , University emb. 7/9 , St. Petersburg 199034 , Russia
- Kola Science Center, Russian Academy of Sciences , Apatity, Murmansk Region 184200 , Russia
| | - Stepan N. Kalmykov
- Department of Chemistry , Moscow State University , GSP-1 , Moscow 119991 , Russia
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Nazarchuk EV, Ikhalaynen YA, Charkin DO, Siidra OI, Petrov VG, Kalmykov SN, Borisov AS. Effect of solution acidity on the structure of amino acid-bearing uranyl compounds. RADIOCHIM ACTA 2019. [DOI: 10.1515/ract-2018-3050] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Abstract
A series of uranyl sulfates and selenates templated by protonated forms of amino acids (glycine, α- and β-alanine, threonine, nicotinic, and isonicotinic acid) has been prepared via isothermal evaporation of strongly acidic solutions. Their structures have been refined by the direct methods and can be classified as inorganic [(UO2)m(TO4)n (H2O)k] (T=S6+, Se6+) moieties combined with the protonated amino acid cations, water molecules and hydronium ions. Their overall motifs demonstrate common features with related structures templated by organic amines. The role of carboxylic acid groups depends on the nature of the corresponding amino acid. They can either link two protonated organic moieties into dimers, or contribute to hydrogen bonding between organic and inorganic parts of the structure. The ammonium ends of the amino acid cations form strong directional bonds to the oxygens of the uranyl and TO4 anions.
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Affiliation(s)
- Evgeny V. Nazarchuk
- Department of Crystallography , Saint-Petersburg State University , St. Petersburg 199034 , Russia
| | - Yuri A. Ikhalaynen
- Department of Chemistry , Moscow State University , GSP-1 , Moscow 119991 , Russia
| | - Dmitri O. Charkin
- Department of Chemistry , Moscow State University , GSP-1 , Moscow 119991 , Russia , Tel.: +7(495)9393504
| | - Oleg I. Siidra
- Department of Crystallography , Saint-Petersburg State University , St. Petersburg 199034 , Russia
- Nanomaterials Research Center, Kola Science Center, Russian Academy of Sciences , Apatity, Murmansk Region 184200 , Russia
| | - Vladimir G. Petrov
- Department of Chemistry , Moscow State University , GSP-1 , Moscow 119991 , Russia
| | - Stepan N. Kalmykov
- Department of Chemistry , Moscow State University , GSP-1 , Moscow 119991 , Russia
| | - Artem S. Borisov
- Department of Crystallography , Saint-Petersburg State University , St. Petersburg 199034 , Russia
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Abstract
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 (2) and (H4Cyclam)(H4[15]aneN4)2[(UO2)6(CrO4)8(Cr2O7)4](H2O)4 (3). The use of aza-crown templates made it possible to isolate unprecedented and complex one-dimensional units in 2 and 3, whereas the structure of 1 is based on simple uranyl-dichromate chains. It is very likely that the presence of relatively large organic molecules of aza-crown ethers does not allow uranyl chromate chain complexes to condense into the units of higher dimensionality (layers or frameworks). In general, the formation of 1, 2, and 3 is in agreement with the general principles elaborated for organically templated uranyl compounds. The negative charge of the [(UO2)(Cr2O7)2(H2O)]2−, [(UO2)2(CrO4)2(Cr2O7)2(H2O)]4− and [(UO2)3(CrO4)4(Cr2O7)2]6− one-dimensional inorganic motifs is compensated by the protonation of all nitrogen atoms in the molecules of aza-crowns.
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Nazarchuk EV, Charkin DO, Siidra OI, Gurzhiy VV. Synthesis and Crystal Structures of New Layered Uranyl Compounds Containing Dimers [(UO2)2O8] of Edge-Linked Pentagonal Bipyramids. RADIOCHEMISTRY 2018. [DOI: 10.1134/s1066362218050041] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Nazarchuk EV, Siidra OI, Charkin DO. Specific Features of the Crystal Chemistry of Layered Uranyl Compounds with the Ratio UO2: TO4 = 5 : 8 (T = S6+, Cr6+, Se6+, Mo6+). RADIOCHEMISTRY 2018. [DOI: 10.1134/s1066362218040033] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Wang F, Mei L, Shi W, Chu T. Synthesis and crystal structures of two new uranyl coordination compounds obtained in aqueous solutions of 1-butyl-2,3-dimethylimidazolium chloride. J COORD CHEM 2018. [DOI: 10.1080/00958972.2018.1479034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Fangyuan Wang
- Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
| | - Lei Mei
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
| | - Weiqun Shi
- Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China
| | - Taiwei Chu
- Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
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Abstract
Abstract
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 viscosity of the solution and overgrowing of Rb2[(UO2)2(CrO4)3(H2O)](H2O) (2) on the crystals of 1. With respect to 1, the framework of 2 is partially dehydrated. Both frameworks differ compositionally by only one water molecule, but this seemingly small difference affects significantly the pore size and overall structural topology of the frameworks, which present very different flexibility of the U–O–Cr links. These are rigid in the pillared framework of 1, in contrast to 2 where the U–O–Cr angles range from 126.3 to 168.2°, reflecting the substantial flexibility of Cr–O–U connections which make them comparable to the corresponding Mo–O–U links in uranyl molybdates.
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Synthesis, Structure, and Photoluminescence Properties of an Organically-Templated Uranyl Selenite. Z Anorg Allg Chem 2015. [DOI: 10.1002/zaac.201500277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Novel [(UO 2 )O 6 (NO 3 ) n ] ( n = 1, 2) based units in organically templated uranyl compounds. INORG CHEM COMMUN 2014. [DOI: 10.1016/j.inoche.2014.10.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Siidra OI, Nazarchuk EV, Sysoeva EV, Kayukov RA, Depmeier W. Isolated Uranyl Chromate and Polychromate Units in Crown Ether Templated Compounds. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402806] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Oleg I. Siidra
- Department of Crystallography, Geological Faculty, St. Petersburg State University, University Emb. 7/9, 199034 St. Petersburg, Russia, http://crystal.geology.spbu.ru/about/docents/siidra‐oi
| | - Evgeny V. Nazarchuk
- Department of Crystallography, Geological Faculty, St. Petersburg State University, University Emb. 7/9, 199034 St. Petersburg, Russia, http://crystal.geology.spbu.ru/about/docents/siidra‐oi
| | - Elena V. Sysoeva
- Department of Crystallography, Geological Faculty, St. Petersburg State University, University Emb. 7/9, 199034 St. Petersburg, Russia, http://crystal.geology.spbu.ru/about/docents/siidra‐oi
| | - Roman A. Kayukov
- Department of Crystallography, Geological Faculty, St. Petersburg State University, University Emb. 7/9, 199034 St. Petersburg, Russia, http://crystal.geology.spbu.ru/about/docents/siidra‐oi
- V. G. Khlopin Radium Institute, 28, 2‐nd Murinskiy ave., 194021, St. Petersburg, Russia
| | - Wulf Depmeier
- Institut für Geowissenschaften, Kiel University, Olshausenstrasse 40, 24118 Kiel, Germany
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Siidra OI, Nazarchuk EV, Kayukov RA, Bubnova RS, Krivovichev SV. CrVI→CrVTransition in Uranyl Chromium Compounds: Synthesis and High-temperature X-ray Diffraction Study of Cs2[(UO2)2(CrO4)3]. Z Anorg Allg Chem 2013. [DOI: 10.1002/zaac.201300219] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Siidra OI, Nazarchuk EV, Suknotova AN, Kayukov RA, Krivovichev SV. Cr(VI) Trioxide as a Starting Material for the Synthesis of Novel Zero-, One-, and Two-Dimensional Uranyl Dichromates and Chromate-Dichromates. Inorg Chem 2013; 52:4729-35. [DOI: 10.1021/ic400341q] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Oleg I Siidra
- Department of Crystallography, Saint-Petersburg State University, St. Petersburg, University emb. 7/9, 199034, Russia.
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