Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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)]. / Nazarchuk, Evgeny V. ; Charkin, Dmitri O. ; Kalmykov, Stepan N. ; Siidra, Oleg I. .
в: Journal of Molecular Structure, 2020.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - 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)]
AU - Nazarchuk, Evgeny V.
AU - Charkin, Dmitri O.
AU - Kalmykov, Stepan N.
AU - Siidra, Oleg I.
N1 - Funding Information: This work was financially supported by the Russian Science Foundation through the grant 16 - 17 - 10085 . Technical support by the SPbSU X-ray Diffraction and Microscopy and Microanalysis Resource Centers is gratefully acknowledged.
PY - 2020
Y1 - 2020
N2 - Three new uranyl chromate-dichromates, [dabcoH 2][(UO 2)(CrO 4)(Cr 2O 7)](H 2O) 2 (1), [dmedaH 2][(UO 2)(CrO 4)(Cr 2O 7)](H 2O) (2), and [pyH] 4[(UO 2)(CrO 4) 2(Cr 2O 7)] (3) were prepared by evaporation of aqueous solutions under ambient conditions. Compound 1 is triclinic, P1¯, a = 7.2533(15), b = 10.328(2), c = 12.399(2) Å, α = 89.292(4), β = 88.124(4), γ = 78.753(4)°, V = 910.5(3) Å 3, R 1 = 0.024; 2is monoclinic, P2 1/с, a = 7.315(4), b = 14.684(8), c = 15.812(9) Å, β = 99.696(12)°, V = 1674.2(15) Å 3, R 1 = 0.034; 3 is orthorhombic, Pnma, a = 16.396(4), b = 21.129(6), c = 7.119(2) Å, V = 2466.1(12) Å 3, R 1 = 0.045. In the crystal structures of 1 and 2, the UO 7 bipyramids and CrO 4 tetrahedra share vertices to form 1∞[(UO 2)(CrO 4)] chains; the dichromate groups Cr 2O 7decorate them with formation of 1∞[(UO 2)(CrO 4)(Cr 2O 7)] 2−chains. In 3,polymerization of 1∞[(UO 2)(CrO 4)(Cr 2O 7)] 2−chains produced 2∞[(UO 2)(CrO 4) 2(Cr 2O 7)] 4−layers. The protonated organic molecules are located in the interlayer and connect to the inorganic backbones via a system of hydrogen bonds. We discuss the structural peculiarities of uranyl chromate-dichromate complexes and the effects of template nature on their geometrical features.
AB - Three new uranyl chromate-dichromates, [dabcoH 2][(UO 2)(CrO 4)(Cr 2O 7)](H 2O) 2 (1), [dmedaH 2][(UO 2)(CrO 4)(Cr 2O 7)](H 2O) (2), and [pyH] 4[(UO 2)(CrO 4) 2(Cr 2O 7)] (3) were prepared by evaporation of aqueous solutions under ambient conditions. Compound 1 is triclinic, P1¯, a = 7.2533(15), b = 10.328(2), c = 12.399(2) Å, α = 89.292(4), β = 88.124(4), γ = 78.753(4)°, V = 910.5(3) Å 3, R 1 = 0.024; 2is monoclinic, P2 1/с, a = 7.315(4), b = 14.684(8), c = 15.812(9) Å, β = 99.696(12)°, V = 1674.2(15) Å 3, R 1 = 0.034; 3 is orthorhombic, Pnma, a = 16.396(4), b = 21.129(6), c = 7.119(2) Å, V = 2466.1(12) Å 3, R 1 = 0.045. In the crystal structures of 1 and 2, the UO 7 bipyramids and CrO 4 tetrahedra share vertices to form 1∞[(UO 2)(CrO 4)] chains; the dichromate groups Cr 2O 7decorate them with formation of 1∞[(UO 2)(CrO 4)(Cr 2O 7)] 2−chains. In 3,polymerization of 1∞[(UO 2)(CrO 4)(Cr 2O 7)] 2−chains produced 2∞[(UO 2)(CrO 4) 2(Cr 2O 7)] 4−layers. The protonated organic molecules are located in the interlayer and connect to the inorganic backbones via a system of hydrogen bonds. We discuss the structural peculiarities of uranyl chromate-dichromate complexes and the effects of template nature on their geometrical features.
UR - http://www.scopus.com/inward/record.url?scp=85093940206&partnerID=8YFLogxK
U2 - 10.1016/j.molstruc.2020.129494
DO - 10.1016/j.molstruc.2020.129494
M3 - Article
JO - Journal of Molecular Structure
JF - Journal of Molecular Structure
SN - 0022-2860
M1 - 129494
ER -
ID: 70165682