Stabilization of [Ru(bpy)2(CO)(η1-CO2)] and unprecedented reversible oxide transfer reactions from CO32- to [Ru(bpy)2(CO)2]2+ and from [Ru(bpy)2(CO)(η1-CO2)] to CO2

Hiroshi Nakajima, Kiyoshi Tsuge, Kiyotsuna Toyohara, Koji Tanaka*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Unusual thermal stability of [Ru(bpy)2(CO)(η1-CO2)] (1) as a metal-η1-CO2 complex was examined both in solid state and in solution. Compound 1 dissolves in CH3CN containing LiCF3SO3. Interaction between Li+ and the η1-CO2 group enhances an electron flow from Ru to the CO2 ligand and greatly contributes to the stabilization of the Ru-η1-CO2 bond. The reaction of [Ru(bpy)2(CO)2](PF6)2 with [Crown·K]2CO3 in dry CH3CN selectively produced 1 through the 1:1 adduct with the RuC(O)-OCO2 moiety. Stoichimetric formation of 1 from the 1:1 adduct is also assisted by [Crown·K]+ as a Lewis acid. Similarly, the reaction of [Ru(bpy)2(CO)2](PF6)2 with (Me4N)2CO3 in DMSO gave the 1:1 adduct in the initial stage, which gradually changed to a metalloanhydride complex, [Ru(bpy)2(CO)((CO)2O)] due to the absence of Lewis acids to stabilize 1, since an addition of LiCF3SO3 to the solution gave [Ru(bpy)2(CO)(η1-CO2)] quantitatively.

Original languageEnglish
Pages (from-to)61-69
Number of pages9
JournalJournal of Organometallic Chemistry
Volume569
Issue number1-2
DOIs
StatePublished - 1998/10/30

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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