Syntheses and crystal structures of the quaternary uranium lanthanide oxyselenides UYb 2O 2Se 3 and U 2Ln 2O 4Se 3 (Ln=Pr, Sm, Gd)

Adam D. Raw; James A Ibers

doi:10.1016/j.jssc.2011.12.002

Syntheses and crystal structures of the quaternary uranium lanthanide oxyselenides UYb ₂O ₂Se ₃ and U ₂Ln ₂O ₄Se ₃ (Ln=Pr, Sm, Gd)

Adam D. Raw, James A Ibers^*

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

Single crystals of the new uranium lanthanide oxyselenide compounds UYb ₂O ₂Se ₃ and U ₂Ln ₂O ₄Se ₃ (Ln=Pr, Sm, Gd) have been synthesized from an Sb ₂Se ₃ flux. The structures have been determined from single-crystal X-ray diffraction data. UYb ₂O ₂Se ₃ is isostructural to UYb ₂O ₂S ₃. The structure comprises layers of edge-sharing YbSe ₆ octahedra and double layers of disordered (U/Ln)O ₄Se ₄ square antiprisms. The U ₂Ln ₂O ₄Se ₃ (Ln=Pr, Sm, Gd) compounds are isostructural to U ₂Ln ₂O ₄S ₃ (Ln=LaGd) whose structure had been deduced previously from X-ray powder diffraction data. In the structure a dodecahedron of four O atoms and four Se atoms surrounds a site primarily occupied by U and a distorted bicapped octahedron of five Se atoms and three O atoms surrounds a site primarily occupied by the lanthanide. These compounds represent the first examples of quaternary uranium oxyselenides.

Original language	English (US)
Pages (from-to)	177-181
Number of pages	5
Journal	Journal of Solid State Chemistry
Volume	186
DOIs	https://doi.org/10.1016/j.jssc.2011.12.002
State	Published - Feb 1 2012

Keywords

Actinides
Flux synthesis
Mixed-anion compounds
Uranium lanthanide oxyselenides
X-ray crystal structure

ASJC Scopus subject areas

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

Access to Document

10.1016/j.jssc.2011.12.002

Fingerprint Dive into the research topics of 'Syntheses and crystal structures of the quaternary uranium lanthanide oxyselenides UYb 2O 2Se 3 and U 2Ln 2O 4Se 3 (Ln=Pr, Sm, Gd)'. Together they form a unique fingerprint.

Cite this

@article{b4db585bbbdc435684ac17174e552cc2,

title = "Syntheses and crystal structures of the quaternary uranium lanthanide oxyselenides UYb 2O 2Se 3 and U 2Ln 2O 4Se 3 (Ln=Pr, Sm, Gd)",

abstract = "Single crystals of the new uranium lanthanide oxyselenide compounds UYb 2O 2Se 3 and U 2Ln 2O 4Se 3 (Ln=Pr, Sm, Gd) have been synthesized from an Sb 2Se 3 flux. The structures have been determined from single-crystal X-ray diffraction data. UYb 2O 2Se 3 is isostructural to UYb 2O 2S 3. The structure comprises layers of edge-sharing YbSe 6 octahedra and double layers of disordered (U/Ln)O 4Se 4 square antiprisms. The U 2Ln 2O 4Se 3 (Ln=Pr, Sm, Gd) compounds are isostructural to U 2Ln 2O 4S 3 (Ln=LaGd) whose structure had been deduced previously from X-ray powder diffraction data. In the structure a dodecahedron of four O atoms and four Se atoms surrounds a site primarily occupied by U and a distorted bicapped octahedron of five Se atoms and three O atoms surrounds a site primarily occupied by the lanthanide. These compounds represent the first examples of quaternary uranium oxyselenides.",

keywords = "Actinides, Flux synthesis, Mixed-anion compounds, Uranium lanthanide oxyselenides, X-ray crystal structure",

author = "Raw, {Adam D.} and Ibers, {James A}",

year = "2012",

month = feb,

day = "1",

doi = "10.1016/j.jssc.2011.12.002",

language = "English (US)",

volume = "186",

pages = "177--181",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

}

TY - JOUR

T1 - Syntheses and crystal structures of the quaternary uranium lanthanide oxyselenides UYb 2O 2Se 3 and U 2Ln 2O 4Se 3 (Ln=Pr, Sm, Gd)

AU - Raw, Adam D.

AU - Ibers, James A

PY - 2012/2/1

Y1 - 2012/2/1

N2 - Single crystals of the new uranium lanthanide oxyselenide compounds UYb 2O 2Se 3 and U 2Ln 2O 4Se 3 (Ln=Pr, Sm, Gd) have been synthesized from an Sb 2Se 3 flux. The structures have been determined from single-crystal X-ray diffraction data. UYb 2O 2Se 3 is isostructural to UYb 2O 2S 3. The structure comprises layers of edge-sharing YbSe 6 octahedra and double layers of disordered (U/Ln)O 4Se 4 square antiprisms. The U 2Ln 2O 4Se 3 (Ln=Pr, Sm, Gd) compounds are isostructural to U 2Ln 2O 4S 3 (Ln=LaGd) whose structure had been deduced previously from X-ray powder diffraction data. In the structure a dodecahedron of four O atoms and four Se atoms surrounds a site primarily occupied by U and a distorted bicapped octahedron of five Se atoms and three O atoms surrounds a site primarily occupied by the lanthanide. These compounds represent the first examples of quaternary uranium oxyselenides.

AB - Single crystals of the new uranium lanthanide oxyselenide compounds UYb 2O 2Se 3 and U 2Ln 2O 4Se 3 (Ln=Pr, Sm, Gd) have been synthesized from an Sb 2Se 3 flux. The structures have been determined from single-crystal X-ray diffraction data. UYb 2O 2Se 3 is isostructural to UYb 2O 2S 3. The structure comprises layers of edge-sharing YbSe 6 octahedra and double layers of disordered (U/Ln)O 4Se 4 square antiprisms. The U 2Ln 2O 4Se 3 (Ln=Pr, Sm, Gd) compounds are isostructural to U 2Ln 2O 4S 3 (Ln=LaGd) whose structure had been deduced previously from X-ray powder diffraction data. In the structure a dodecahedron of four O atoms and four Se atoms surrounds a site primarily occupied by U and a distorted bicapped octahedron of five Se atoms and three O atoms surrounds a site primarily occupied by the lanthanide. These compounds represent the first examples of quaternary uranium oxyselenides.

KW - Actinides

KW - Flux synthesis

KW - Mixed-anion compounds

KW - Uranium lanthanide oxyselenides

KW - X-ray crystal structure

UR - http://www.scopus.com/inward/record.url?scp=84856084859&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84856084859&partnerID=8YFLogxK

U2 - 10.1016/j.jssc.2011.12.002

DO - 10.1016/j.jssc.2011.12.002

M3 - Article

AN - SCOPUS:84856084859

VL - 186

SP - 177

EP - 181

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

SN - 0022-4596

ER -