Infrared spectroscopic study of SO42− ions included in M′2M′′(SeO4)2⋅6H2O (Me′=K, NH4+; M′′=Mg, Co, Ni, Cu, Zn) and NH4+ ions included in K2M(XO4)2⋅6H2O (X=S, Se; M′′=Mg, Co, Ni, Cu, Zn)

Marinova, D.; Karadjova, V.; Stoilova, D.

doi:10.1016/j.saa.2014.06.114

Cited by 13 publications

(2 citation statements)

References 56 publications

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“…The IR spectra of 2 – 7 and 13 – 15 were recorded using KBr pellets on the Bruker Vertex 70 spectrometer in the region 4000–300 cm –1 (Figure ). The band assignment shows that the vibrational spectroscopic data are in good agreement with the results of single-crystal X-ray diffraction study. − By analysis of the spectroscopic data, several intervals could be distinguished. The first is clearly seen through all spectra–diffuse bands with the maximum at 1630 cm –1 correspond to the O–H bending vibrations of water molecules.…”

Section: Resultssupporting

confidence: 74%

Mixed Uranyl Sulfate–Selenates: Evolution of Structural Topology and Complexity vs Chemical Composition

Gurzhiy

Tyumentseva

Krivovichev

et al. 2016

Crystal Growth & Design

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Phase formation in the aqueous system of uranyl nitrate, potassium hydroxide and variable amount of sulfuric and selenic acids has been investigated. Four different types of crystalline phases with variable S and Se contents were isolated and characterized using single-crystal X-ray diffraction (XRD) and IR spectroscopy. Topological analysis and information-based complexity calculations demonstrated: (a) the absence of a continuous solid solution in the system, (b) the

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Section: Resultssupporting

confidence: 74%

Mixed Uranyl Sulfate–Selenates: Evolution of Structural Topology and Complexity vs Chemical Composition

Gurzhiy

Tyumentseva

Krivovichev

et al. 2016

Crystal Growth & Design

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“…A MIRacle ATR accessory (Pike Technologies) with a Ge ATR crystal was used. The band assignment shows that the vibrational spectroscopic data are in a good agreement with the results of the single-crystal X-ray diffraction studies. ,,− …”

Section: Methodssupporting

confidence: 74%

Chemically Induced Polytypic Phase Transitions in the Mg[(UO₂)(TO₄)₂(H₂O)](H₂O)₄ (T = S, Se) System

et al. 2019

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Chemically induced polytypic phase transitions have been observed during experimental investigations of crystallization in the mixed uranyl sulfate-selenate Mg[(UO2)(TO4)2(H2O)](H2O)4 (T = S, Se) system. Three different structure types form in the system, depending upon the Se:S ratio in the initial aqueous solution. The phases with the Se/(Se + S) ratios (in mol %) in the ranges 0–9, 16–47, and 58–100 crystallize in the space groups P21, Pmn21, and P21/c, respectively. The structures of the phases are based upon the same type of uranyl-based sulfate/selenate chains that, through hydrogen bonds, are linked into pseudolayers of the same topological type. The layers are linked into three-dimensional structures via interlayer Mg-centered octahedra. The three structure types contain the same layers but with different stacking sequences that can be conveniently described as belonging to the 1M, 2O, and 2M polytypic modifications. The Se-for-S substitution demonstrates a strong selectivity with preferential incorporation of Se into less tightly bonded T1 site. The larger ionic radius of Se6+ relative to S6+ induces rotation of (T1O4) tetrahedra in the adjacent layers and reconstruction of the structure types. From the information-theoretic viewpoint, the intermediate Pmn21 structure type is more complex than the monoclinic end-member structure types.

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Cu₃(SeO₄)₂(SeO₃OH)₂(H₂O)₁₆ – The First Example of a Linear Octahedral–Tetrahedral Heptamer in Inorganic Compounds

et al. 2015

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Infrared spectroscopic study of SO42− ions included in M′2M′′(SeO4)2⋅6H2O (Me′=K, NH4+; M′′=Mg, Co, Ni, Cu, Zn) and NH4+ ions included in K2M(XO4)2⋅6H2O (X=S, Se; M′′=Mg, Co, Ni, Cu, Zn)

Cited by 13 publications

References 56 publications

Mixed Uranyl Sulfate–Selenates: Evolution of Structural Topology and Complexity vs Chemical Composition

Mixed Uranyl Sulfate–Selenates: Evolution of Structural Topology and Complexity vs Chemical Composition

Chemically Induced Polytypic Phase Transitions in the Mg[(UO₂)(TO₄)₂(H₂O)](H₂O)₄ (T = S, Se) System

Cu₃(SeO₄)₂(SeO₃OH)₂(H₂O)₁₆ – The First Example of a Linear Octahedral–Tetrahedral Heptamer in Inorganic Compounds

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Infrared spectroscopic study of SO42− ions included in M′2M′′(SeO4)2⋅6H2O (Me′=K, NH4+; M′′=Mg, Co, Ni, Cu, Zn) and NH4+ ions included in K2M(XO4)2⋅6H2O (X=S, Se; M′′=Mg, Co, Ni, Cu, Zn)

Cited by 13 publications

References 56 publications

Mixed Uranyl Sulfate–Selenates: Evolution of Structural Topology and Complexity vs Chemical Composition

Mixed Uranyl Sulfate–Selenates: Evolution of Structural Topology and Complexity vs Chemical Composition

Chemically Induced Polytypic Phase Transitions in the Mg[(UO2)(TO4)2(H2O)](H2O)4 (T = S, Se) System

Cu3(SeO4)2(SeO3OH)2(H2O)16 – The First Example of a Linear Octahedral–Tetrahedral Heptamer in Inorganic Compounds

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Chemically Induced Polytypic Phase Transitions in the Mg[(UO₂)(TO₄)₂(H₂O)](H₂O)₄ (T = S, Se) System

Cu₃(SeO₄)₂(SeO₃OH)₂(H₂O)₁₆ – The First Example of a Linear Octahedral–Tetrahedral Heptamer in Inorganic Compounds