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.
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry