title: B-α-[AsW9O33](9-) polyoxometalates incorporating hexanuclear uranium {U6O8}-like clusters bearing the U(IV) form or unprecedented mixed valence U(IV)/U(VI) involving direct U(VI)=O-U(IV) bonding.
abstract: The use of B-α-[AsW9O33](9-) anionic moieties in association with the tetravalent 5f uranium UCl4 precursor affords three new hexanuclear uranium {U6O8}-like clusters embedded in a polyoxometalate architecture. Two of them are constituted by an unprecedented uranium mixed valence U(IV)/U(VI) cluster.
authors.affiliation: 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. sylvain.duval@univ-lille1.fr.
authors.forename: Sylvain
authors.initials: S
authors.lastname: Duval
authors.affiliation: Laboratoire de Spectrochimie Infrarouge et Raman (LASIR) - UMR CNRS 8516, Université Lille Nord de France, Bat C5, 59652 Villeneuve d'Ascq, France.
authors.forename: Sophie
authors.initials: S
authors.lastname: Sobanska
authors.affiliation: 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. sylvain.duval@univ-lille1.fr.
authors.forename: Pascal
authors.initials: P
authors.lastname: Roussel
authors.affiliation: 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. sylvain.duval@univ-lille1.fr.
authors.forename: Thierry
authors.initials: T
authors.lastname: Loiseau