Infrared Spectra of Steroids. II. The Influence of the Solvent on Carbonyl Frequency Correlations

摘要: The influence of solvents on frequencies the carbonyl absorption bands in infrared spectra 56 steroids has been investigated with a double beam spectrophotometer. Good agreement was obtained data previously published for characteristic carbon disulfide similar types ketosteroids. maxima chloroform and methylene bromide were displaced toward lower by about 2–17 cm−1 from their or tetrachloride. magnitude shift depended upon location type group. Additional dispalcement order 1–19 found bromoform solution. In mineral oil spectra, considerable variation observed particular group at same position different steroid molecules. two Δ5-7-ketosteroids are reported first time to be as those Δ4-3-ketosteroids. A new interaction 3 a, 9a-epoxides...