title: Syntheses of the 47 electron clusters [(Cp*Fe)3(mu3-X)2] (X = S, Se) and the First Fe/Sn/Se Heterocubane Cluster [(CpFe)3(SnCl3)(mu3-Se)4] x DME by the use of chalcogenostannate salts.
abstract: By reacting 1-aminoethylammonium (H2NCH2CH2NH3+ = enH+) salts of [Sn2E6]4- anions (E = S, Se), [enH]4[Sn2S6] (1) and [enH]4[Sn2Se6] x en (2), with FeCl2/LiCp, three novel (partly) oxidized, Cp* ligated iron chalcogenide clusters were synthesized. Two of them, [(CpFe)3(mu3-S)2] (3) and [(Cp*Fe)3(mu3-Se)2] (4), contain formally 47 valence electrons. [(Cp*Fe)3(SnCl3)(mu3-Se)4] x DME (5) represents the first known mixed metal Fe/Sn/Se heterocubane type cluster. Compounds 3-5 were structurally characterized by single-crystal X-ray diffraction, and the odd valence electron number of the [Fe3E2] clusters (E = S, Se) was confirmed by density functional (DFT) investigations, mass spectrometry, cyclic voltammetry and a susceptibility measurement of 3.
authors.affiliation: Institut für Anorganische Chemie, Universität Karlsruhe (TH), D-76128 Karlsruhe, Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Zimmermann
authors.forename: Christopher E
authors.initials: CE
authors.lastname: Anson
authors.forename: Amanda L
authors.initials: AL
authors.lastname: Eckermann
authors.forename: Markus
authors.initials: M
authors.lastname: Wunder
authors.forename: Gerda
authors.initials: G
authors.lastname: Fischer
authors.forename: Ilka
authors.initials: I
authors.lastname: Keilhauer
authors.forename: Erik
authors.initials: E
authors.lastname: Herrling
authors.forename: Bernd
authors.initials: B
authors.lastname: Pilawa
authors.forename: Oliver
authors.initials: O
authors.lastname: Hampe
authors.forename: Florian
authors.initials: F
authors.lastname: Weigend
authors.forename: Stefanie
authors.initials: S
authors.lastname: Dehnen