Excited Molecular States and Bonds in the Structures of Vanadium Oxides

摘要

A study of the oxygen thermoemission activity of samples of vanadium oxides and oxovanadium series of Magneli phases (V_nO_(2n_1),n=4-8;these phases were identified by X-ray diffraction and gas pycnom-etry) by gas chromatography,IR spectrophotometry,and adsorption-desorption calorimetry (qualitative and quantitative analysis of the molecular composition of the desorbed gas mixture) showed that the prevailing species in the desorbed mixture are electronically excited oxygen molecules in the ~lDELTA_g and ~1SIGMA_g+ states (30-60%).The thermal desorption of oxygen is irreversible.In this work,we studied the structural nature of this effect by high-temperature high-resolution IR spectroscopy (IKS-25M).