Preparation and Reactivity of Rhenium-Nitride Complexes Bearing PNP-Type Pincer Ligands toward Nitrogen Fixation

Fanqiang Meng, Shogo Kuriyama, Akihito Egi, Hiromasa Tanaka, Kazunari Yoshizawa, Yoshiaki Nishibayashi

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A series of mononuclear rhenium(V)-nitride complexes bearing substituted pyridine-based PNP-type pincer ligands are synthesized. The substituent in the PNP-type pincer ligand does not significantly improve the catalytic activity for ammonia formation, while the introduction of a methoxy group increases the catalytic activity for the silylamine formation. Stoichiometric studies reveal that a rhenium(V)-nitride complex bearing a nonsubstituted PNP-type pincer ligand is transformed into a dearomatized rhenium(V)-nitride dimer under reductive conditions, while the dearomatized rhenium(V)-nitride dimer exhibits catalytic activity for the nitrogen fixation reactions. However, a rhenium(V)-nitride complex bearing a methyl-substituted PNP-type pincer ligand shows different reactivity by reduction, where deprotonation of the methylene group of the PNP-type pincer ligand is observed.

Original languageEnglish
JournalOrganometallics
DOIs
Publication statusAccepted/In press - 2022

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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