Matrix isolated Co atoms: excitation, emission and the photochemical Co + H2 -> CoH2 reaction

Article abstract of DOI:10.1016/0584-8539(87)80147-2

The a⁴P<*>a⁴F transitions in the 12000-14000 cm^-1 region for Co atoms isolated in Ne, Ar and Kr matrices have been explored by excitation and emission measurements.In Ar and Kr, but not in Ne, there is evidence of matrix splitting of the a⁴P_5/2 level.Irradiation in this red region of Ar and Kr matrices containing Co and H2 (HD,D2) leads to the formation of the metal dihydride.Rates of the photochemical reaction have been measured at 12 K as a function of laser irradiation and show distinct isotope dependence.I.R. vibrational intensities place a lower limit of about 160 deg for the HCoH valence angle.