title: Samarocene oxide: from an undesired decomposition product to a new reagent.
abstract: Samarocene oxide [Cp*2Sm-O-SmCp*2] is mostly considered as an undesired decomposition product of the well-established but highly air-sensitive samarocene, [Cp*2Sm(thf)2]. [Cp*2Sm-O-SmCp*2] is often formed by accidental exposure of [Cp*2Sm(thf)2] to air or wet solvents. We show here that [Cp*2Sm-O-SmCp*2] acts as a mild oxide base and thus is a valuable synthetic equivalent for "O(2-)". The reaction of [Cp*2Sm-O-SmCp*2] with the inorganic and organic anhydrides COS, CS2, SO2, SO3, Re2O7, and (PhC(O))2O at room temperature resulted in each case in an O(2-) insertion. The corresponding products were isolated as their samarium complexes.
authors.affiliation: Institute of Inorganic Chemistry Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131 Karlsruhe, Germany. roesky@kit.edu.
authors.forename: Christoph
authors.initials: C
authors.lastname: Schoo
authors.affiliation: Institute of Inorganic Chemistry Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131 Karlsruhe, Germany. roesky@kit.edu and G.A. Razuvaev Institute of Organometallic Chemistry RAS, Tropinina str. 49, 603950 Nizhny Novgorod, Russia.
authors.forename: Svetlana V
authors.initials: SV
authors.lastname: Klementyeva
authors.affiliation: Institute of Inorganic Chemistry Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131 Karlsruhe, Germany. roesky@kit.edu.
authors.forename: Michael T
authors.initials: MT
authors.lastname: Gamer
authors.affiliation: Institute of Inorganic Chemistry Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131 Karlsruhe, Germany. roesky@kit.edu and Nikolaev Institute of Inorganic Chemistry SB RAS, Prosp. Lavrentieva 3, 630090 Novosibirsk, Russia. konch@niic.nsc.ru and Novosibirsk State University, Pirogovastr. 2, 630090 Novosibirsk, Russia.
authors.forename: Sergey N
authors.initials: SN
authors.lastname: Konchenko
authors.affiliation: Institute of Inorganic Chemistry Karlsruhe Institute of Technology (KIT), Engesserstraße 15, 76131 Karlsruhe, Germany. roesky@kit.edu.
authors.forename: Peter W
authors.initials: PW
authors.lastname: Roesky