Insight into the Uranyl Oxyfluoride ...
Document type :
Article dans une revue scientifique
Permalink :
Title :
Insight into the Uranyl Oxyfluoride Topologies through the Synthesis, Crystal Structure, and Evidence of a New Oxyfluoride Layer in [(UO2)4F13][Sr3(H2O)8](NO3)·H2O
Author(s) :
Jouffret, Laurent J. [Auteur]
Hiltbrunner, Jean-Michel [Auteur]
Rivenet, Murielle [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Sergent, Nicolas [Auteur]
Obbade, Saïd [Auteur]
Avignant, Daniel [Auteur]
Dubois, Marc [Auteur]
Hiltbrunner, Jean-Michel [Auteur]
Rivenet, Murielle [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Sergent, Nicolas [Auteur]
Obbade, Saïd [Auteur]
Avignant, Daniel [Auteur]
Dubois, Marc [Auteur]
Journal title :
Inorganic Chemistry
Volume number :
55
Pages :
12185-12192
Publication date :
2016-11-17
HAL domain(s) :
Chimie/Matériaux
English abstract : [en]
A new strontium uranyl oxyfluoride, [(UO2)4F13][Sr3(H2O)8](NO3)·H2O, was synthesized under hydrothermal conditions. The single-crystal X-ray structure was determined. This compound crystallizes in the triclinic space group ...
Show more >A new strontium uranyl oxyfluoride, [(UO2)4F13][Sr3(H2O)8](NO3)·H2O, was synthesized under hydrothermal conditions. The single-crystal X-ray structure was determined. This compound crystallizes in the triclinic space group P1̅ (No. 2), with unit cell parameters a = 10.7925(16) Å, b = 10.9183(16) Å, c = 13.231(2) Å, α = 92.570(8)°, β = 109.147(8)°, γ = 92.778(8)°, V = 1468.1(4) Å3, and Z = 2. The structure is built from uranyl-containing chains of tetrameric units of corner-sharing UO2F5 pentagonal bipyramids. These chains are linked through trimeric strontium units to form strontium–uranyl oxyfluoride layers further assembled by nitrate groups. The interlayer space is occupied by free water molecules. This compound was characterized by spectroscopic methods, especially 19F NMR highlighting the many different fluoride sites. Structural relationships with other uranyl oxyfluorides were investigated through the different F/O ratios, the structural building unit, and the structural arrangement.Show less >
Show more >A new strontium uranyl oxyfluoride, [(UO2)4F13][Sr3(H2O)8](NO3)·H2O, was synthesized under hydrothermal conditions. The single-crystal X-ray structure was determined. This compound crystallizes in the triclinic space group P1̅ (No. 2), with unit cell parameters a = 10.7925(16) Å, b = 10.9183(16) Å, c = 13.231(2) Å, α = 92.570(8)°, β = 109.147(8)°, γ = 92.778(8)°, V = 1468.1(4) Å3, and Z = 2. The structure is built from uranyl-containing chains of tetrameric units of corner-sharing UO2F5 pentagonal bipyramids. These chains are linked through trimeric strontium units to form strontium–uranyl oxyfluoride layers further assembled by nitrate groups. The interlayer space is occupied by free water molecules. This compound was characterized by spectroscopic methods, especially 19F NMR highlighting the many different fluoride sites. Structural relationships with other uranyl oxyfluorides were investigated through the different F/O ratios, the structural building unit, and the structural arrangement.Show less >
Language :
Anglais
Audience :
Internationale
Popular science :
Non
Administrative institution(s) :
ENSCL
CNRS
Centrale Lille
Univ. Artois
Université de Lille
CNRS
Centrale Lille
Univ. Artois
Université de Lille
Collections :
Research team(s) :
Chimie, matériaux et procédés pour un nucléaire durable (CIMEND)
Submission date :
2019-09-25T14:06:06Z