Abstract

The infrared spectra of eight zinc dialkylphosphorodithioates and four potassium dialkylphosphorodithioates have been examined The infrared spectra of the zinc, cadmium, copper, nickel, and potassium salts of a mixed dialkylphosphorodithioate have been studied and compared to the spectrum of the parent acid. The P-O-C absorption of all of these compounds is found to occur about 25 cm⁻¹ lower in frequency than in compounds containing the P=O group. The thiophosphoryl group (P=S) is found to occur at 635-668 cm⁻¹ both for the free acid and the covalent salts. It occurs at a higher frequency, 675-702 cm⁻¹ for the more ionic potassium salt. The P-S-(M) absorption occurs at 510-556 cm⁻¹.

Infrared Spectra of Monolayers on Metal Mirrors

S. A. Francis and A. H. Ellison
J. Opt. Soc. Am. 49(2) 131-138 (1959)

Remarks on the Infrared Spectra of Metallic Salts Containing Groups of the XO₂-Type Ion

Clément Duval and Jean LeComte
J. Opt. Soc. Am. 44(4) 261-263 (1954)

Infrared and Raman Spectra of Some Tin-Alkyls

C. R. Dillard and J. R. Lawson
J. Opt. Soc. Am. 50(12) 1271-1274 (1960)

Infrared Spectra of Coal and Carbohydrate Chars

R. A. Friedel and M. G. Pelipetz
J. Opt. Soc. Am. 43(11) 1051-1052 (1953)

Similarities in the Infrared Spectra of Homologous Compounds

Richard G. Fowler and Raymond M. Smith
J. Opt. Soc. Am. 43(11) 1054-1057 (1953)