Uranyl Cation Incorporation in the [P8W48O184]40- Macrocycle Phosphopolytungstate

Maxime Dufaye; Sylvain Duval; Grégory Stoclet; Xavier Trivelli; Marielle Huvé; Alain Moissette; Thierry Loiseau

doi:10.1021/acs.inorgchem.8b02210

Uranyl Cation Incorporation in the [P₈W₄₈O₁₈₄]^40- Macrocycle Phosphopolytungstate

Inorg Chem. 2019 Jan 22;58(2):1091-1099. doi: 10.1021/acs.inorgchem.8b02210. Epub 2018 Dec 28.

Authors

Maxime Dufaye¹, Sylvain Duval¹, Grégory Stoclet², Xavier Trivelli³, Marielle Huvé¹, Alain Moissette⁴, Thierry Loiseau¹

Affiliations

¹ Unité de Catalyse et Chimie du Solide (UCCS) - UMR CNRS 8181, Université de Lille Nord de France, USTL-ENSCL , Bat C7, BP 90108, 59652 Villeneuve d'Ascq , France.
² Unité Matériaux Et Transformations (UMET) - UMR CNRS 8207 , Bat 6, BP 90108, 59652 Villeneuve d'Ascq , France.
³ Unité de Glycobiologie Structurale et Fonctionnelle (UGSF) - UMR CNRS 8576, Université de Lille Nord de France , Bat C9, BP 90108, 59652 Villeneuve d'Ascq , France.
⁴ Laboratoire de Spectroscopie Infrarouge et Raman (LASIR) - UMR CNRS 8516, Université de Lille Nord de France, USTL-ENSCL , Bat C7, BP 90108, 59652 Villeneuve d'Ascq , France.

PMID: 30592422
DOI: 10.1021/acs.inorgchem.8b02210

Abstract

Association of uranyl nitrate with the macrocycle [P₈W₄₈O₁₈₄]^40- in formate buffered aqueous solution leads to the formation of a new compound (K_11.3Li_8.1Na₂₂)[(UO₂)_7.2(HCOO)_7.8(P₈W₄₈O₁₈₄)Cl₈]·89H₂O (1). Its characterization by XRD reveals a high disorder of the uranyl cations and the formation of monodimensional chains of anionic [(UO₂)_7.2(HCOO)_7.8(P₈W₄₈O₁₈₄)Cl₈]^41.4- entities linked through formate ligands. The uranyl species are located either in the coordinating sites of the macrocycle [P₈W₄₈O₁₈₄]^40- or at its surface. Further studies of the molecule by SAXS and TEM show that the 1D chain collapses to give rise to the formation of polydisperse spherically aggregated species with an average radius of 129 Å.