Organometallic photochemistry at the solid/gas interface. Photochemistry of surface-confined cobalt tetracarbonyl monitored by Fourier transform infrared photoacoustic spectroscopy

Chemical Bond Activation on Surface Sites Generated Photochemically from RhI(CO)2Species

“…Kinney et al reported the photochemical loss of a CO ligand from silica-supported Co(CO) 4 species to produce Co(CO) 3 species. Isotopically labeled 13 CO and PF 3 exchanged photochemically with CO to form various Co(CO) n ( 13 CO) 4 - n and Co(CO) n (PF 3 ) 4 - n species, respectively.…”

“…Kinney et al 75 reported the photochemical loss of a CO ligand from silica-supported Co(CO) 4 species to produce Co(CO) 3 species. Isotopically labeled 13 78 The kinetics of photooxidation of M(CO) 6 (M ) Mo, W) adsorbed on various powdered TiO 2 and NaY zeolite surfaces to produce MO 3 species has been investigated.…”

Photoacoustic cell for Fourier transform infrared spectrometry of surface species

“…This cell has been used in our laboratory to study a variety of chemical systems (33)(34)(35). The controlled temperature atmosphere capabilities make it possible to study systems such as low temperature photoreactions of supported cobalt carbonyls (33) and heterogeneous polymerization catalysts (34).…”

“…Equation 1 was tested for stronger absorbances by using alumina with surface-attached cobalt tetracarbonyl (33). The relative absorbances of the three v(CO) peaks were determined by transmission spectrometry (17).…”

“…The dependence for surface absorptions should be "1 if eq 1 is valid. The acoustic frequency dependence of the surface absorptions was determined by comparing FTPAS spectra of a sample of cobalt tetracarbonyl on silica (33) at mirror velocities differing by a factor of 2. This had the effect of changing the frequency of modulation at each wavelength, since = 2v (velocity).…”