Reactions of Laser-Ablated Vanadium Atoms with Dioxygen. Infrared Spectra of VO, VO₂, OOVO₂, and V₂O₂ in Solid Argon

Abstract

Laser-ablated V atoms react with O2 to give primarily the bent VO2 dioxide molecule and a smaller yield of the monoxide VO. The OVO valence angle is estimated as 118 ± 3° from oxygen isotopic ν3 frequencies and 121° from DFT calculations. New absorptions appear on annealing to 35 K that can be assigned to two V2O2 isomers and the superoxo adduct to VO2, namely the OOVO2 molecule. Both VO2 and OOVO2 reveal weak ν1 + ν3 combination bands, which support the assignment of ν1 and ν3 fundamental vibrations.

Periodic Density Functional Theory Study of VOn Species Supported on the CeO2(111) Surface

“…3.7. {VO 4 3 Ce 12 O 24 } CeO 2 (111) .In isolated VO 4 a superoxo group is present as shown by matrix isolation spectroscopy,43 confirmed by DFT calculations44 and suggested by the maximum oxidation state þ5 of vanadium, V 5þ (O 2-) 2 (O 2 -).…”

Emission spectroscopy of a new 2Δ–12Δ system of VO

“…These spectra have been utilized as a sensitive probe of the circumstellar environment and are of significant importance in modeling of the stellar atmospheres. VO and other oxides of vanadium are also of chemical and industrial importance because of their use in optical devices, semiconductors, catalysts, and coatings [6][7][8][9][10][11].…”

Fourier Transform Emission Spectroscopy of a New 2Φ–12Δ System of VO

“…VO and other oxides of vanadium such as VO 2 and V 2 O 2 are of considerable interest due to their use in optical devices, semiconductors, catalysts, and coatings (12)(13)(14)(15)(16)(17). Because of its high corrosion resistance at normal temperatures, vanadium is used to produce rust-resistant industrial devices.…”

“…The infrared (17) and ESR (34) spectra of VO and other oxides of vanadium such as VO 2 have been observed from the reaction of laser-ablated vanadium atoms with O 2 in solid argon and the ground state vibrational intervals for these species have been measured (17). VO molecules created by ablation have also been studied in presence of trapping magnetic fields after cooling them using a buffer gas (35).…”