title: Facile reduction of a uranyl(VI) β-ketoiminate complex to U(IV) upon oxo silylation.
abstract: Reaction of the uranyl β-ketoiminate complex UO(2)((tBu)acnac)(2) (1) ((tBu)acnac = (t)BuNC(Ph)CHC(Ph)O) with Me(3)SiI, in the presence of Ph(3)P, results in the reductive silylation of the uranyl moiety and formation of the U(V) bis-silyloxide complex [Ph(3)PI][U(OSiMe(3))(2)I(4)] (2). Subsequent reaction of 2 with Lewis bases, such as 2,2'-bipyridine (bipy), 1,10-phenanthroline (phen), and tetrahydrofuran (THF), results in a further reduction of the metal center and isolation of the U(IV) complexes U(OSiMe(3))(2)I(2)(bipy)(2) (3), U(OSiMe(3))(2)I(2)(phen)(2) (4), and [U(OSiMe(3))(2)I(THF)(4)][I(3)] (5), respectively.
authors.affiliation: Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, California 93106, USA.
authors.forename: Jessie L
authors.initials: JL
authors.lastname: Brown
authors.forename: Charles C
authors.initials: CC
authors.lastname: Mokhtarzadeh
authors.forename: Jeremie M
authors.initials: JM
authors.lastname: Lever
authors.forename: Guang
authors.initials: G
authors.lastname: Wu
authors.forename: Trevor W
authors.initials: TW
authors.lastname: Hayton