Syntheses and crystal structures of two novel alkaline uranyl chromates A 2(UO 2)(CrO 4) 2 (A=Rb, Cs) with bidentate coordination mode of uranyl ions by chromate anions

Результат исследований: Научные публикации в периодических изданияхстатья

14 Цитирования (Scopus)

Выдержка

Single crystals of Cs 2(UO 2)(CrO 4) 2 and Rb 2(UO 2)(CrO 4) 2 were prepared by solid state reactions. The structures are based upon the [(UO 2)(CrO 4) 2] 2- chains. Within the chains, UrO 5 pentagonal bipyramids (Ur=uranyl) form Ur 2O 8 dimers, which are linked via CrO 4 tetrahedra into one-dimensional chains. The CrO 4 tetrahedra coordinate uranyl ions in both mono- and bidentate fashion, which is unusual for uranyl chromates. The bidentate coordination has a strong influence upon geometrical parameters of both U and Cr coordination polyhedra. The conformation of the chains in 1 and 2 is different due to the different size of the Cs and Rb cations.

Язык оригиналаанглийский
Страницы (с-по)286-290
Число страниц5
ЖурналJournal of Solid State Chemistry
Том187
DOI
СостояниеОпубликовано - мар 2012

Отпечаток

Chromates
chromates
Solid state reactions
Dimers
Anions
Conformations
Cations
Negative ions
Crystal structure
Positive ions
Single crystals
Ions
anions
crystal structure
synthesis
tetrahedrons
ions
polyhedrons
dimers
solid state

Предметные области Scopus

  • Физика конденсатов
  • Неорганическая химия
  • Физическая и теоретическая химия
  • Керамика и композитные материалы
  • Электроника, оптика и магнитные материалы
  • Химия материалов

Цитировать

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title = "Syntheses and crystal structures of two novel alkaline uranyl chromates A 2(UO 2)(CrO 4) 2 (A=Rb, Cs) with bidentate coordination mode of uranyl ions by chromate anions",
abstract = "Single crystals of Cs 2(UO 2)(CrO 4) 2 and Rb 2(UO 2)(CrO 4) 2 were prepared by solid state reactions. The structures are based upon the [(UO 2)(CrO 4) 2] 2- chains. Within the chains, UrO 5 pentagonal bipyramids (Ur=uranyl) form Ur 2O 8 dimers, which are linked via CrO 4 tetrahedra into one-dimensional chains. The CrO 4 tetrahedra coordinate uranyl ions in both mono- and bidentate fashion, which is unusual for uranyl chromates. The bidentate coordination has a strong influence upon geometrical parameters of both U and Cr coordination polyhedra. The conformation of the chains in 1 and 2 is different due to the different size of the Cs and Rb cations.",
keywords = "Bidentate coordination, Single crystal X-ray diffraction, Structure determination, Uranyl chromates",
author = "Siidra, {Oleg I.} and Nazarchuk, {Evgeny V.} and Krivovichev, {Sergey V.}",
year = "2012",
month = "3",
doi = "10.1016/j.jssc.2012.01.037",
language = "English",
volume = "187",
pages = "286--290",
journal = "Journal of Solid State Chemistry",
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publisher = "Elsevier",

}

Syntheses and crystal structures of two novel alkaline uranyl chromates A 2(UO 2)(CrO 4) 2 (A=Rb, Cs) with bidentate coordination mode of uranyl ions by chromate anions. / Siidra, Oleg I.; Nazarchuk, Evgeny V.; Krivovichev, Sergey V.

В: Journal of Solid State Chemistry, Том 187, 03.2012, стр. 286-290.

Результат исследований: Научные публикации в периодических изданияхстатья

TY - JOUR

T1 - Syntheses and crystal structures of two novel alkaline uranyl chromates A 2(UO 2)(CrO 4) 2 (A=Rb, Cs) with bidentate coordination mode of uranyl ions by chromate anions

AU - Siidra, Oleg I.

AU - Nazarchuk, Evgeny V.

AU - Krivovichev, Sergey V.

PY - 2012/3

Y1 - 2012/3

N2 - Single crystals of Cs 2(UO 2)(CrO 4) 2 and Rb 2(UO 2)(CrO 4) 2 were prepared by solid state reactions. The structures are based upon the [(UO 2)(CrO 4) 2] 2- chains. Within the chains, UrO 5 pentagonal bipyramids (Ur=uranyl) form Ur 2O 8 dimers, which are linked via CrO 4 tetrahedra into one-dimensional chains. The CrO 4 tetrahedra coordinate uranyl ions in both mono- and bidentate fashion, which is unusual for uranyl chromates. The bidentate coordination has a strong influence upon geometrical parameters of both U and Cr coordination polyhedra. The conformation of the chains in 1 and 2 is different due to the different size of the Cs and Rb cations.

AB - Single crystals of Cs 2(UO 2)(CrO 4) 2 and Rb 2(UO 2)(CrO 4) 2 were prepared by solid state reactions. The structures are based upon the [(UO 2)(CrO 4) 2] 2- chains. Within the chains, UrO 5 pentagonal bipyramids (Ur=uranyl) form Ur 2O 8 dimers, which are linked via CrO 4 tetrahedra into one-dimensional chains. The CrO 4 tetrahedra coordinate uranyl ions in both mono- and bidentate fashion, which is unusual for uranyl chromates. The bidentate coordination has a strong influence upon geometrical parameters of both U and Cr coordination polyhedra. The conformation of the chains in 1 and 2 is different due to the different size of the Cs and Rb cations.

KW - Bidentate coordination

KW - Single crystal X-ray diffraction

KW - Structure determination

KW - Uranyl chromates

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U2 - 10.1016/j.jssc.2012.01.037

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