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Tri(N-carbazolyl)phosphine Gold(I) Complexes: Structural and Catalytic Activity Studies.

Chang Zheng1, Yu Tang2, Biao Yu1,2

  • 1School of Chemistry and Materials Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China.

Inorganic Chemistry
|October 11, 2022
PubMed
Summary

Researchers synthesized novel gold(I) complexes with unique carbazolylphosphine ligands. These complexes exhibit isotopic polymorphism and demonstrate significant potential in gold(I)-catalyzed glycosylation reactions, achieving high turnover numbers.

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Area of Science:

  • Organometallic Chemistry
  • Supramolecular Chemistry
  • Catalysis

Background:

  • Gold(I) complexes are valuable catalysts in organic synthesis.
  • Understanding non-covalent interactions in metal complexes is crucial for catalyst design.
  • Isotopic effects on crystal packing and reactivity are not fully understood.

Purpose of the Study:

  • To synthesize and characterize novel tri(N-carbazolyl)phosphine gold(I) complexes.
  • To investigate the Au-H(D) interaction within these complexes.
  • To explore the catalytic applications of these complexes in glycosylation reactions.

Main Methods:

  • Synthesis and characterization of twelve tri(N-carbazolyl)phosphine gold(I) complexes.
  • Spectroscopic and crystallographic analysis to confirm structure and interactions.
  • Evaluation of catalytic activity in gold(I)-catalyzed glycosylation.

Main Results:

  • Successful synthesis of protonated and deuterated gold(I) complexes.
  • Observation of an elusive Au-H(D) interaction.
  • Discovery of isotopic polymorphism in complexes 5(H)/5(D) with distinct crystal packing.
  • High catalytic efficiency in glycosylation, with turnover numbers (TON) up to 27,000.

Conclusions:

  • The synthesized gold(I) complexes exhibit unique Au-H(D) interactions and isotopic polymorphism.
  • These complexes show promising catalytic activity for glycosylation reactions.
  • The findings contribute to the understanding of non-covalent interactions and isotopic effects in organometallic chemistry.