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Early-Transition-Metal Complexes of Functionalized Nonagermanide Clusters: Synthesis and Characterization of [Cp2(MeCN)Ti(η1-Ge9{Si(TMS)3}3)] and K3[Cp2Ti(η1-Ge9{Si(TMS)3}2)2].
Geitner, Felix S; Klein, Wilhelm; Storcheva, Oksana; Tilley, T Don; Fässler, Thomas F.
Afiliação
  • Geitner FS; Department Chemie , Technische Universität München , Lichtenbergstraße 4 , 85747 Garching bei München , Germany.
  • Klein W; Department Chemie , Technische Universität München , Lichtenbergstraße 4 , 85747 Garching bei München , Germany.
  • Storcheva O; Department Chemie , Technische Universität München , Lichtenbergstraße 4 , 85747 Garching bei München , Germany.
  • Tilley TD; Department of Chemistry , University of California , Berkeley , California 94720-1460 , United States.
  • Fässler TF; Department Chemie , Technische Universität München , Lichtenbergstraße 4 , 85747 Garching bei München , Germany.
Inorg Chem ; 58(19): 13293-13298, 2019 Oct 07.
Article em En | MEDLINE | ID: mdl-31532208
ABSTRACT
Anionic clusters with a homoatomic [Ge9] core are species with Ge atoms in low oxidation states. In this study their reaction with early-transition-metal complexes was investigated. We report the syntheses of Ti(III) complexes of silylated [Ge9] Zintl clusters, which are rare examples of molecular complexes with Ge-Ti interactions. The neutral species [Cp2(MeCN)Ti(η1-Ge9{Si(TMS)3}3)] (1) was obtained by the reaction of K[Ge9{Si(TMS)3}3] with [Cp2TiCl]2 in toluene as dark orange crystals, whereas the reaction of K2[Ge9{Si(TMS)3}2] with [Cp2TiCl]2 in thf and subsequent recrystallization from toluene resulted in dark green crystals of K3[Cp2Ti(η1-Ge9{Si(TMS)3}2)2] (2). Compound 2 contains the trianion [Cp2Ti(η1-Ge9{Si(TMS)3}2)2]3- (2a), which can be described either as a [Cp2Ti]+-bridged [Ge9{Si(TMS)3}2]2- dimer or as a heavily distorted tetrahedral Ti(III) complex bearing two germanide cluster ligands. Both compounds display donor-acceptor interactions between single Ge vertex atoms of the [Ge9] clusters and Ti(III). Compounds 1 and 2 were characterized by single-crystal X-ray diffraction, EPR spectroscopy, and elemental analysis.

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Inorg Chem Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Alemanha

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Inorg Chem Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Alemanha
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