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Preparation and Infrared Spectra of Palladium Derivatives of Some Organophosphorus Insecticides

Preparation and Infrared Spectra of Palladium Derivatives of Some Organophosphorus Insecticides

T F Bidleman, R W Frei

Talanta. 1973 Jan;20(1):103-13.

PMID: 18961243

Abstract:

The preparation of palladium complexes of phosphorodithioate (Guthion, Ethyl Guthion, Imidan, and Cidial) and phosphorothioate (Fenthion) insecticides is described. The Pd : pesticide ratios in the derivatives are ca. 1 : 1 for the phosphorodithioates and 2 : 1 in the case of Fenthion. The infrared spectra of the derivatives are compared with those of the parent insecticides. Palladium complexation of phosphorodithioates results in a lowering of the PS frequencies by 60-75 cm(-1) and also produces changes in the POC region. Milligram quantities of Thimet, Trithion, and Cidial on thin-layer chromatograms were reacted in situ with sodium tetrachloropalladate(II). The infrared spectra of the compounds recovered from the plate depended greatly on the Pd : pesticide ratio on the spot, and the analytical significance of these results is discussed.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP13820536	Sodium tetrachloropalladate(II)		13820-53-6	Price

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