Solid State Chemistry of Ten-Fold Coordinate ...
Document type :
Article dans une revue scientifique
DOI :
Permalink :
Title :
Solid State Chemistry of Ten-Fold Coordinate Thorium(IV) Complexes with Oxalates in the Presence of Ammonium and Hydrazinium Ions
Author(s) :
Blanchard, Florent [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Orano
Rivenet, Murielle [Auteur]
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Vigier, Nicolas [Auteur]
Orano
Hablot, Isabelle [Auteur]
Orano
Grandjean, Stéphane [Auteur]
Commissariat à l'énergie atomique et aux énergies alternatives [CEA]
Abraham, Francis [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]

Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Orano
Rivenet, Murielle [Auteur]

Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Vigier, Nicolas [Auteur]
Orano
Hablot, Isabelle [Auteur]
Orano
Grandjean, Stéphane [Auteur]
Commissariat à l'énergie atomique et aux énergies alternatives [CEA]
Abraham, Francis [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Unité de Catalyse et Chimie du Solide - UMR 8181 [UCCS]
Journal title :
Crystal Growth & Design
Volume number :
18
Pages :
4593-4601
Publisher :
ACS
Publication date :
2018-06-25
English keyword(s) :
Oxides
Anions
Ions
Thorium
Cations
Anions
Ions
Thorium
Cations
HAL domain(s) :
Chimie/Matériaux
English abstract : [en]
Double and triple thorium oxalates have been synthesized by successive evaporation of a solution of thorium nitrate, ammonium, or hydrazinium oxalate and hydrogen peroxide. Compounds M6Ca2Th2(C2O4)9·nH2O (M = NH4+, N2H5+) ...
Show more >Double and triple thorium oxalates have been synthesized by successive evaporation of a solution of thorium nitrate, ammonium, or hydrazinium oxalate and hydrogen peroxide. Compounds M6Ca2Th2(C2O4)9·nH2O (M = NH4+, N2H5+) (1) were first accidentally obtained due to the unexpected presence of calcium as impurities in the thorium nitrate used. Further evaporation led to the M2Th2(C2O4)5·nH2O (M = NH4+, N2H5+) (2) precipitation. After an additional evaporation of 2 weeks, compounds (2) transform into M4Th(C2O4)4·nH2O (M = NH4+, N2H5+) (3). In the three compounds, thorium is coordinated by five bidentate oxalate ions. In (1) Th(C2O4)5 entities share an oxalate ion to form dimeric units further connected by Ca(C2O4)5 (M = NH4+) or Ca(C2O4)5(H2O) (M = N2H5+) entities to build three-dimensional (3D) frameworks. Compounds (2) exhibit a 3D honeycomb thorium oxalate framework. Compounds (3) contain chains of oxalate-shared Th(C2O4)5 entities, whereas, in solution, the compound (NH4)2Th2(C2O4)5·1.5H2O (2) reacts with oxalate ions and turns into compound (NH4)4Th(C2O4)4·4H2O (3); in the solid state the chains of the compound (3) condense to form the 3D framework of the compound (2) and release solid ammonium oxalate.Show less >
Show more >Double and triple thorium oxalates have been synthesized by successive evaporation of a solution of thorium nitrate, ammonium, or hydrazinium oxalate and hydrogen peroxide. Compounds M6Ca2Th2(C2O4)9·nH2O (M = NH4+, N2H5+) (1) were first accidentally obtained due to the unexpected presence of calcium as impurities in the thorium nitrate used. Further evaporation led to the M2Th2(C2O4)5·nH2O (M = NH4+, N2H5+) (2) precipitation. After an additional evaporation of 2 weeks, compounds (2) transform into M4Th(C2O4)4·nH2O (M = NH4+, N2H5+) (3). In the three compounds, thorium is coordinated by five bidentate oxalate ions. In (1) Th(C2O4)5 entities share an oxalate ion to form dimeric units further connected by Ca(C2O4)5 (M = NH4+) or Ca(C2O4)5(H2O) (M = N2H5+) entities to build three-dimensional (3D) frameworks. Compounds (2) exhibit a 3D honeycomb thorium oxalate framework. Compounds (3) contain chains of oxalate-shared Th(C2O4)5 entities, whereas, in solution, the compound (NH4)2Th2(C2O4)5·1.5H2O (2) reacts with oxalate ions and turns into compound (NH4)4Th(C2O4)4·4H2O (3); in the solid state the chains of the compound (3) condense to form the 3D framework of the compound (2) and release solid ammonium oxalate.Show less >
Language :
Anglais
Peer reviewed article :
Oui
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 :
2019-09-25T15:06:56Z
2021-03-04T13:57:31Z
2021-03-04T13:57:31Z