Pyridine-Based PCP-Ruthenium Complexes: Unusual Structures and Metal-Ligand Cooperation

Shan Tang, Niklas Von Wolff, Yael Diskin-Posner, Gregory Leitus, Yehoshoa Ben-David, David Milstein

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Metal-ligand cooperation (MLC) by dearomatization/aromatization provides a unique way for bond activation, which has led to the discovery of various acceptorless dehydrogenative coupling reactions. However, most of the studies are based on pincer complexes with a central nitrogen donor. Aiming at exploration of the possibility of MLC by PCP-type pincer complexes, we report herein the synthesis, characterization, structure, and reactivity of pyridine-based PCP-Ru complexes. X-ray structures and DFT calculations indicate a carbenoid character of quaternized pyridine-based PCP-Ru complexes. These complexes undergo dearomatization by direct deprotonation, and the dearomatized complex can react with hydrogen, alcohols, or nitriles to regain aromatization via MLC.

Original languageEnglish
Pages (from-to)7554-7561
Number of pages8
JournalJournal of the American Chemical Society
Issue number18
Publication statusPublished - Apr 19 2019

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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