STRUCTURAL ASPECTS OF ORGANOPHOSPHORUS EXTRACTANTS AND THEIR METALLIC COMPLEXES AS DEDUCED FROM SPECTRAL AND MOLECULAR WEIGHT STUDIES
From freezing-point and isopiestic studies, it was found that the acidic organophosphorus extractarts of the type (GO)/sub 2/PO(OH) and GOG'PO(OH), where G may be aryl, alkyl or mixed, are predominantiy dimeric in non-polar diluents, such as n-hexane, cyclohexane, benzene and carbon tetrachioride. The dimers are very stable and appear to monomerize only in more polar solvents, such as acetone, chloroform or ethanol. Infrared spectra of these acids were made, and the positions of the phosphoryl absorption determined in terms of the electronegativity of the G group. It was concluded from these studies that for the acids (GO)/sub 2/PO(OH) an ionic P/sup +/O/sup -/ and a strong acid is the better extractant; while for the acids GOG' PO(OH) a phosphoryl group with high double bond character and a strong acid is a better extractant. For both acid types these criteria are provided whenever the G group is highly electronegative. (auth)
- Research Organization:
- Argonne National Lab., Ill.
- DOE Contract Number:
- W-31109-ENG-38
- NSA Number:
- NSA-17-010748
- OSTI ID:
- 4707685
- Report Number(s):
- TID-17726; UAC-6955
- Country of Publication:
- United States
- Language:
- English
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