title: An ion pair formed by protonated Fe(cp*py)2 and the octanuclear cluster U8Cl24O4(cp*py)2 [cp*py is tetramethyl-5-(2-pyridyl)cyclopentadiene].
abstract: In bis[1,1',2,2',3,3',4,4'-octamethyl-5-(2-pyridinio)-5'-(2-pyridyl)ferrocene] di-mu(3)-chloro-hexadeca-mu(2)-chloro-hexachlorodi-mu(4)-oxo-di-mu(3)-oxo-bis[(eta(5),kappaN)-1,2,3,4-tetramethyl-5-(2-pyridyl)cyclopentadienyl]octauranium(IV) dichloromethane tetrasolvate, [Fe(C(14)H(17)N)(C(14)H(16)N)](2)[U(8)Cl(24)O(4)(C(14)H(16)N)(2)].4CH(2)Cl(2), (I), two protonated Fe(cp*py)(2) units [cp*py is tetramethyl-5-(2-pyridyl)cyclopentadiene] form an ion pair with the dianionic centrosymmetric cluster U(8)Cl(24)O(4)(cp*py)(2). The latter is the highest nuclearity assemblage in the chemistry of uranium (non-uranyl) compounds reported to date.
authors.affiliation: CEA/Saclay, SCM (CNRS URA 331), Bâtiment 125, 91191 Gif-sur-Yvette, France.
authors.forename: Lionel
authors.initials: L
authors.lastname: Moisan
authors.forename: Thierry
authors.initials: T
authors.lastname: Le Borgne
authors.forename: Pierre
authors.initials: P
authors.lastname: Thuéry
authors.forename: Michel
authors.initials: M
authors.lastname: Ephritikhine