Cycloparaphenylene-based ionic donor-acceptor supramolecule: isolation and characterization of Li⁺@C60⊂[10]CPP

Angew Chem Int Ed Engl. 2015 Mar 16;54(12):3707-11. doi: 10.1002/anie.201500544. Epub 2015 Feb 18.

Abstract

The first cycloparaphenylene (CPP)-based ionic donor-acceptor supramolecule Li(+)@C60⊂[10]CPP⋅X(-) has been synthesized. X-ray crystallography not only confirmed the molecular structure of Li(+)@C60⊂[10]CPP⋅X(-) but also uncovered the formation of a unique ionic crystal. The strong charge-transfer interaction between [10]CPP and Li(+)@C60, which was confirmed by electrochemical measurement and spectroscopic analyses, caused significant delocalization of the positive charge across the entire complex.

Keywords: charge transfer; cycloparaphenylenes; ionic supramolecule; lithium ion encapsulated fullerene.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Crystallography, X-Ray
  • Cycloparaffins / chemistry*
  • Electrochemical Techniques
  • Fullerenes / chemistry*
  • Ions / chemistry
  • Lithium / chemistry*
  • Molecular Conformation
  • Spectrophotometry, Ultraviolet

Substances

  • Cycloparaffins
  • Fullerenes
  • Ions
  • Lithium
  • fullerene C60