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A ferrocenyl-substituted pseudotitanocene complex

Stepnicka1, Cisarova, Horacek

  • 1Department of Inorganic Chemistry, Charles University, Hlavova 2030, 128 40 Prague 2, Czech Republic. stepnic@natur.cuni.cz.

Acta Crystallographica. Section C, Crystal Structure Communications
|October 12, 2000
PubMed
Summary
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This study details a novel titanium-ferrocene compound with linked metallocene units. Bulky trimethylsilyl groups influence the structure, creating a specific angle between the metallocene units.

Area of Science:

  • Organometallic Chemistry
  • Coordination Chemistry
  • Materials Science

Background:

  • Metallocene compounds are crucial in catalysis and materials science.
  • Understanding the structural implications of bulky substituents is key for designing novel organometallic complexes.

Purpose of the Study:

  • To synthesize and characterize a novel titanium-ferrocene compound.
  • To investigate the structural impact of trimethylsilyl substituents on linked metallocene units.

Main Methods:

  • Single-crystal X-ray diffraction was used to determine the molecular structure.
  • Analysis of bond angles and distances provided insights into steric effects.

Main Results:

  • The title compound, (eta(5)-cyclopentadienyl)[(1,2,3,4, 5-eta)-4-ferrocenyl-1,2,5,6-tetrakis(trimethylsilyl)cyclohexa-2, 4-dien-1-yl]titanium(II), features two directly linked metallocene units.

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  • These units subtend an angle of 52.9 degrees, influenced by bulky trimethylsilyl groups.
  • The cyclohexadienyl ligand exhibits an envelope conformation with a Ti-plane distance of 1.512 A.

    • Conclusions:

    • The steric bulk of trimethylsilyl groups significantly dictates the geometry of linked metallocene complexes.
    • This structural insight is valuable for the rational design of organometallic compounds with tailored properties.