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- Title
Synthesis and Characterization of Titanium 7-Azaindolato Complexes and their Lithium Precursors.
- Authors
Haehnel, Martin; Arndt, Perdita; Spannenberg, Anke; Rosenthal, Uwe
- Abstract
Two differently 2-substituted 7-azaindoles (substituent = H ( 1-H), t-Bu ( 1- tBu)) react with n-butyllithium in tmeda to give different Li complexes. Using the ligand 1-H, the binuclear complex [(tmeda)Li(azH)]2 ( 2-H) is formed. The sterically more demanding ligand 1- tBu leads to formation of the mononuclear Li complex (tmeda)Li(az tBu) ( 2- tBu). The decamethyltitanocene bis(trimethylsilyl)acetylene complex Cp*2Ti(η2-Me3SiC2SiMe3) ( 3a) reacts with 7-azaindole ( 1-H) to give the dark red titanocene(III) complex 4. Using the sterically more demanding 1- tBu ligand upon deprotonation with dialkylmagnesium, followed by subsequent salt metathesis with (Cp2TiCl)2, the dark green titanocene(III) heterometallacyclic complex 5 is obtained. Complexes 2- H, 2- tBu and 5 were characterized by X-ray analyses.
- Subjects
TITANIUM; LITHIUM; BUTYLLITHIUM; AZAINDOLES; SINGLE crystals; PROTON transfer reactions; LIGANDS (Chemistry); MOLECULAR structure
- Publication
Zeitschrift für Anorganische und Allgemeine Chemie, 2014, Vol 640, Issue 5, p893
- ISSN
0044-2313
- Publication type
Article
- DOI
10.1002/zaac.201300645