Infrared studies on α-nitro-ketones. Part I. ω-Nitroacetophenone

Abstract

The i.r. spectra of solid ω-nitroacetophenone, C₆H₅·CO·CH₂·NO₂, and its deuterium compounds, C₆D₅·CO·CH₂NO₂, C₆H₅·CO·CD₂·NO₂, and C₆D₅·CO·CD₂·NO₂, have been studied in detail in the region 4000–400 cm.^–1. The spectra show that ω-nitroacetophenone is in the α-nitro-ketonic form. A planar or quasi-planar arrangement of the C₆H₅–CO–C–N grouping is also indicated. Evidence of intramolecular interaction between the hydrogen atoms of the methylene group and the hydrogen atom in the ortho-position in the benzene ring has been found.