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Resonance Raman studies of transition metal peroxo complexes: 3 ‐The blue intermediate formed in the reaction of chromium(VI) with hydrogen peroxide in strongly acid solution
Author(s) -
Hester R. E.,
Nour E. M.
Publication year - 1981
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250110112
Subject(s) - raman spectroscopy , chemistry , chromium , resonance (particle physics) , transition metal , aqueous solution , hydrogen peroxide , absorption band , metal , analytical chemistry (journal) , absorption (acoustics) , spectral line , photochemistry , inorganic chemistry , materials science , catalysis , atomic physics , optics , organic chemistry , physics , astronomy , composite material
Resonance Raman spectra are reported for the short‐lived blue intermediate formed in the Cr(VI)‐H 2 O 2 reaction in strongly acidic aqueous solution using several different excitation wavelengths. The spectra show a number of bands which are assigned to the different ν(CrO) modes and to the ν(OO) mode within the structure CrO 5 ·H 2 O. The Raman band intensity profiles indicate that the resonànce effect is associated with the 590 nm absorption band, which is assigned to the charge‐transfer transition OCr(VI). The instability of the species is interpreted on the basis of the relatively low ν(CrO) and high ν(OO) wavenumber values.