Surface Organometallic Chemistry: Evidence of Disproportionation of Co2(CO)8to Co2+[Co(CO)4]- 2at the Surface of Partially Hydroxylated Magnesia

Narcisso Homs, Agnès Choplin*, Pilar Ramirez de la Piscina, Lin Huang, Edouard Garbowski, Roberto Sanchez-Delgado, Albert Theoliér, Jean-Marie Maurice Basset

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


Chemisorption of Co2(CO)8on a partially hydroxylated mAgnèsia surface has been followed by in situ IR and UV spectroscopies and gas-phase analysis. The complex is quickly disproportionated at room temperature into Co2+and [Co(CO)4]-with evolution of ca. 3 mol of CO/mol of Co2(CO)8. On the surface, [Co(CO)4]-has been characterized mainly by IR spectroscopy and Co2+by UV spectroscopy. Both Co2+and [Co(CO)4]-could be quantitatively extracted from the surface by [PPN]Cl as [PPN]-[Co(CO)4] and [PPN]2[CoCl4], respectively. Chemisorption of [PPN][Co(CO)4] on mAgnèsia suggests that [Co(CO)4]-is coordinated to Mg2+surface sites rather than Co2+via heteronuclear metal-metal ion pairing.

Original languageEnglish (US)
Pages (from-to)4030-4033
Number of pages4
JournalInorganic Chemistry
Issue number22
StatePublished - Jan 1 1988

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry


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