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Related Concept Videos

π Molecular Orbitals of 1,3-Butadiene01:24

π Molecular Orbitals of 1,3-Butadiene

Conjugated dienes have lower heats of hydrogenation than cumulated and isolated dienes, making them more stable. The enhanced stabilization of conjugated systems can be understood from their π molecular orbitals.
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Network Covalent Solids02:18

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Bridging molecular clusters and fullerene.

Veronica Bonuccelli1, Tiziana Funaioli, Piero Leoni

  • 1Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, I-56126 Pisa, Italy. leoni@dcci.unipi.it.

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|October 5, 2013
PubMed
Summary

New platinum cluster-fullerene compounds were synthesized and characterized. Spectroelectrochemical studies revealed limited electronic communication between the platinum cluster and fullerene units in these novel covalent assemblies.

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Area of Science:

  • Organometallic Chemistry
  • Materials Science
  • Supramolecular Chemistry

Background:

  • Platinum clusters offer unique electronic and structural properties.
  • Fullerenes are versatile building blocks for advanced materials.
  • Covalent assembly of distinct functional units is key to designing novel hybrid materials.

Purpose of the Study:

  • To synthesize novel platinum cluster-fullerene hybrid compounds.
  • To investigate the electronic communication between platinum cluster and fullerene moieties.
  • To characterize the structure and properties of these new materials.

Main Methods:

  • Sonogashira dehydrohalogenation for coupling reactions.
  • Synthesis of platinum cluster precursors ({Pt3}Cl and {Pt6}Cl2).
  • Formation of fulleropyrrolidine derivatives via reaction with N-octylglycine and C60.
  • Cyclovoltammetric and spectroelectrochemical (IR, UV, NIR) analysis.
  • X-ray crystallography for structural determination of compound 3.

Main Results:

  • Successful synthesis of two new platinum cluster-fullerene derivatives, {Pt3}CC-(1,4)C6H4-C2H3N(C8H17)C60 (5) and {Pt6}(CC-(1,4)C6H4-C2H3N(C8H17)C60)2 (6).
  • Characterization of intermediate formyl clusters {Pt3}CC-(1,4)C6H4-CHO (3) and {Pt6}(CC-(1,4)C6H4-CHO)2 (4).
  • Crystal and molecular structure of compound 3 was determined.
  • Spectroelectrochemical data indicated minimal electronic communication between the platinum cluster and fullerene components in assemblies 5 and 6.

Conclusions:

  • Novel platinum cluster-fullerene covalent assemblies were successfully synthesized.
  • The electronic interaction between the platinum cluster and fullerene units is significantly limited in these hybrid materials.
  • The synthetic strategies provide a pathway for creating new organometallic-organic hybrid materials with tunable properties.