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Ansa-bridged bis(benzene) titanium complexes.

Holger Braunschweig1, Charlotte Brückner2, Mehmet Ali Celik2

  • 1Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg (Germany), Fax: (+49) 931-31-84623. h.braunschweig@uni-wuerzburg.de.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|June 26, 2015
PubMed
Summary
This summary is machine-generated.

Researchers synthesized novel ansa-bridged bis(benzene) titanium complexes using an improved method. These complexes, featuring one- and two-atom bridges, were characterized and studied electrochemically and computationally.

Keywords:
Group 14 elementsarene ligandssandwich complexessolid-state structurestitanium

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Area of Science:

  • Organometallic Chemistry
  • Titanium Complexes
  • Sandwich Compounds

Background:

  • Bis(benzene) titanium complexes are foundational in organometallic chemistry.
  • Synthesis of functionalized derivatives presents challenges.
  • Ansa-bridged complexes offer unique structural and electronic properties.

Purpose of the Study:

  • To report the first synthesis of ansa-bridged bis(benzene) titanium complexes.
  • To explore the reactivity of [Ti(η(6) -C6 H6 )2 ] with bridging ligands.
  • To characterize novel titanium complexes.

Main Methods:

  • Improved synthesis of [Ti(η(6) -C6 H6 )2 ].
  • Deprotonation with n-butyllithium (nBuLi) and N,N,N',N'',N''-pentamethyldiethylenetriamine (pmdta).
  • Salt metathesis reactions.
  • Characterization using NMR, UV/Vis, elemental analysis, and X-ray crystallography.
  • Electrochemical and computational studies.

Main Results:

  • Successful synthesis of 1,1'-dilithio salt [Ti(η(6) -C6 H5 Li)2 ]⋅pmdta.
  • Preparation of the first one- and two-atom-bridged ansa complexes.
  • Full characterization of the ansa complexes.
  • Formation of a bent sandwich complex [Ti(η(6) -C6 H6 )2 (IMe)] with 1,3-dimethylimidazole-2-ylidene (IMe).

Conclusions:

  • The study demonstrates a versatile route to novel ansa-bridged bis(benzene) titanium complexes.
  • These findings expand the scope of titanium organometallic chemistry.
  • The characterized complexes provide platforms for further investigation into their properties and applications.