Fusing pyrene and ferrocene into a chiral, redox-active triangle

Area of Science:

• Supramolecular Chemistry
• Organometallic Chemistry
• Materials Science

Background:

• Ferrocene and pyrene are versatile building blocks in supramolecular chemistry.
• Macrocyclic compounds offer unique structural and electronic properties.
• C2-symmetric arrangements are crucial for developing chiral materials.

Purpose of the Study:

• To synthesize a novel macrocycle integrating ferrocene-pyrene dyads.
• To investigate the structural and dynamic behavior of the macrocycle.
• To explore the electrochemical properties of the oxidized form.

Main Methods:

• One-pot synthesis of the macrocycle.
• X-ray crystallography for structural analysis.
• Solution-state dynamic studies (e.g., NMR).
• Electrochemical techniques (e.g., cyclic voltammetry).

Main Results:

• Successful synthesis of a C2-symmetric macrocycle containing three ferrocene-pyrene dyads.
• Crystal structure revealed alternating packing of enantiomeric conformers via π-π stacking.
• Dynamic interconversion of conformers observed in solution.
• Weak electrostatic interactions identified between oxidized ferrocene units.

Conclusions:

• The synthesized macrocycle exhibits interesting structural and dynamic characteristics.
• The study provides insights into the behavior of ferrocene-based macrocycles.
• This work contributes to the development of new organometallic materials.