title: Triamidoamine complexes of chromium(III) and chromium(IV).
abstract: Treatment of [CrCl3(THF)3] with slightly more than 1 equiv of Li3(N3N) [(N3N)(3-) = ((Me3SiNCH2CH2)3N)(3-)] affords the triamidoamine complex [Cr(N3N)] (1) in 75% yield. 1 is oxidized by PhICl2, CuCl2, or AgCl to give the chromium(IV) complex [Cr(N3N)Cl] (2) in moderate yields. Alternatively, complex 2 is obtained directly from [CrCl3(THF)3] in 50% yield after treatment with 0.5 equiv of Li3(N3N). Both compounds are high-spin complexes bearing three and two unpaired electrons, respectively. Their molecular structures are described revealing a trigonal monopyramidal and trigonal bipyramidal coordination geometry of the chromium center, respectively.
authors.affiliation: Fachinstitut für Anorganische und Allgemeine Chemie der Humboldt-Universität zu Berlin, Hessische Strasse 1-2, D-10115 Berlin, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Schneider
authors.forename: A C
authors.initials: AC
authors.lastname: Filippou