Infrared Multiple Photon Dissociation Spectroscopy of Hydrated Cobalt Anions Doped with Carbon Dioxide CoCO₂ (H₂ O)_n ^- , n=1-10, in the C-O Stretch Region.

ABSTRACT: We investigate anionic [Co,CO₂ ,nH₂ O]^- clusters as model systems for the electrochemical activation of CO₂ by infrared multiple photon dissociation (IRMPD) spectroscopy in the range of 1250-2234 cm^-1 using an FT-ICR mass spectrometer. We show that both CO₂ and H₂ O are activated in a significant fraction of the [Co,CO₂ ,H₂ O]^- clusters since it dissociates by CO loss, and the IR spectrum exhibits the characteristic C-O stretching frequency. About 25 % of the ion population can be dissociated by pumping the C-O stretching mode. With the help of quantum chemical calculations, we assign the structure of this ion as Co(CO)(OH)₂ ^- . However, calculations find Co(H

SUBMITTER: Barwa E 

PROVIDER: S-EPMC7051846 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature