Formation of Molecular Chromium(IV) Oxide (CrO2) by Photolysis of Cr(CO)6 in O2-doped Argon Matrices
The binary chromium oxide, CrO2, is produced upon prolonged broad-band u.v. -visible irradiation of Cr(CO)6 isolated in O2-doped argon matrices at ca. 12 K.Infrared spectroscopic studies involving isotopic substitution with 18O show that CrO2 is a non-linear dioxo molecule with an upper limit for the O-Cr-O bond angle of 117+/-3 degree.Measurements of the intensities of the infrared absorptions arising from the symmetric and antisymmetric CrO2 stretches of this molecule give a value for O-Cr-O of 112+/-2 degree, confirming the non-linear structure.
Almond, Matthew J.,Hahne, Michael
p. 2255 - 2260
(2007/10/02)
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