Infrared Absorption Spectra of the 18O-Labeled Acetylacetonates of Cr(III) and Mn(III)
- 15 February 1967
- journal article
- conference paper
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 46 (4) , 1506-1510
- https://doi.org/10.1063/1.1840881
Abstract
The 18O‐induced isotopic shifts of the Cr(III) and Mn(III) acetylacetonate (of over 90 at % 18O) infrared absorption bands were measured in the 400–1650‐cm−1 region. The hitherto accepted assignments of these bands are discussed in the light of these measurements. It is found that the band at about 1520 cm−1 is due to C=C stretching while that at about 1570 cm−1 has a C=O stretching character. The ∼1425‐cm−1 band must be due to the asymmetrical CH3 bending while the one at 661 cm−1 probably belongs to an out‐of‐plane deformation and that at 590 cm−1 to an M—O stretching.Keywords
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