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The KBM Equation for Solvent-Induced Frequency Shifts Revisited

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Abstract:

The KBM equation for determining solvent frequency shifts is generally useless for predicting vC=O frequencies for compounds in various solvent systems. The vC=O frequencies for acetone and tetramethylurea in various solvents do not correlate with dielectric effects (ε) of the solvent. A series of factors most likely determine the extent of solute/solvent-induced vibrational mode frequency shifts.

Keywords: IR correlations (C=O group); Infrared; Solvent effects, IR

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702894203435

Affiliations: The Dow Chemical Company, Analytical Sciences Laboratory, 1897 Building, Midland, Michigan 48667

Publication date: September 1, 1989

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