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[Au(S-C6F5)] and [Au(S-C6F4-CF3)]: Reactivity, Structure, DSC, and Calculation Studies.

Pavel A Tkachenko1, Alexander M Maksimov2, Varvara Sinitsa1

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|October 20, 2025
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Summary
This summary is machine-generated.

New gold(I) coordination polymers with fluorinated aryl thiolates were synthesized using an atom-economy method. These polymers transform into novel linear chain complexes featuring gold-gold interactions, offering unique structural insights.

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Area of Science:

  • Inorganic Chemistry
  • Materials Science
  • Coordination Chemistry

Background:

  • Gold(I) complexes are of interest due to their unique electronic and structural properties.
  • Fluorinated organic ligands can impart distinct characteristics to metal complexes.
  • Coordination polymers offer tunable structures and potential applications.

Purpose of the Study:

  • To synthesize and characterize novel gold(I) coordination polymers using fluorinated aryl thiolates.
  • To investigate the structural transformation of these polymers upon reaction with pyridine and DMSO.
  • To explore the nature of intermolecular interactions, specifically Au···Au interactions, in the resulting complexes.

Main Methods:

  • Synthesis of gold(I) coordination polymers ([Au(S-Arf)]n).
  • Characterization using DSC, SEM-EDX, TGA, IR, and PL spectroscopy.
  • Transformation reactions with pyridine and DMSO.
  • Structural elucidation of new complexes via single-crystal X-ray diffraction (SCXRD).
  • Quantum-chemical calculations to study Au···Au interactions.

Main Results:

  • Successful synthesis of [Au(S-Arf)]n polymers from HS-Arf and Au(I).
  • Transformation into [{Au(py)2}{Au(S-Arf)2}]n complexes with linear cationic and anionic gold units linked by Au···Au interactions.
  • Discovery of a unique polymeric structure [Au4(S-C6F4-CF3)4]n·nDMSO upon reaction with DMSO.
  • Detailed structural analysis of the novel polymeric complexes.

Conclusions:

  • Developed an atom-economy method for synthesizing gold(I) coordination polymers with fluorinated aryl thiolates.
  • Demonstrated the ability to transform these polymers into new complex structures with tunable properties.
  • Highlighted the significance of Au···Au interactions in stabilizing the extended chain structures.