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

Research output

14 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)286-290
Number of pages5
JournalJournal of Solid State Chemistry
Volume187
DOIs
Publication statusPublished - Mar 2012

Fingerprint

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

Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry

Cite this

@article{a00f957416394cd9bc787102711eb1c5,
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",
issn = "0022-4596",
publisher = "Elsevier",

}

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

UR - http://www.scopus.com/inward/record.url?scp=84857232149&partnerID=8YFLogxK

U2 - 10.1016/j.jssc.2012.01.037

DO - 10.1016/j.jssc.2012.01.037

M3 - Article

AN - SCOPUS:84857232149

VL - 187

SP - 286

EP - 290

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

SN - 0022-4596

ER -