SPECTROSCOPIC STUDIES OF ORGANOPHOSPHORUS COMPOUNDS: PART I. THE CONSTITUTION OF ALKYLPHOSPHINE – CARBON DISULFIDE ADDUCTS

Abstract

The constitution of the alkylphosphine – carbon disulfide adducts has been investigated by the study of their infrared spectra. Certain definite features of the spectra of the adducts are the shift of the P—C asymmetric vibrations to higher frequencies and the large shifts in the fundamentals of the acceptor molecule. These features are attributed to the formation of a quadruply connected phosphorus compound. From a comparison of the spectra of the carbon disulfide adducts with those of the corresponding phosphonium compounds, phosphine oxides and phosphines, evidence is provided for the structure of these compounds which has been suggested to be of the phosphonium type.