INFRARED STUDIES OF BIFUNCTIONAL EXTRACTANTS*
- 1 January 1986
- journal article
- research article
- Published by Taylor & Francis in Solvent Extraction and Ion Exchange
- Vol. 4 (6) , 1149-1169
- https://doi.org/10.1080/07366298608917916
Abstract
The infrared spectra of a series of neutral bifunctional extractants were examined. The carbonyl and phosphoryl stretching regions were monitored for changes as nitric or hydrocloric acid was extracted and as Nd(III) or Sm(III) was extracted. It was found that the phosphoryl group is the primary site of extraction as was predicted from solvent extraction measurements. Upon heavy loading of the metal ion in the organic phase, the extractant OφD(iB)CMP0 (octyl(phenyl)-diisobutylcarbamoylmethylphosphine oxide) can behave as a bidentate ligand as does the analogous di-hexyl-N,N-diethylcarbamoylmethylphosphonate solid state complex. The tendency for the carbonyl oxygen to form a bond directly to the metal ion is enhanced in chloride media at low acidity. The spectra of mixtures of 0φD(iB)CMP0 with the phase modifier TBP indicate no interaction between the two extractants and TBP does not appear to be part of the primary metal-extractant complex.Keywords
This publication has 17 references indexed in Scilit:
- APPLICATION OF LANTHANIDE INDUCED SHIFTS FOR THE DETERMINATION OF SOLUTION STRUCTURES OF METAL ION - EXTRACTANT COMPLEXESSolvent Extraction and Ion Exchange, 1984
- THE EXTRACTION OF Am(III) FROM NITRIC ACID BY OCTYL(PHENYL)-N,N-DIISOBUTYLCARBAMOYLMETHYLPHOSPHINE OXIDE - TRI-n-BUTYL PHOSPHATE MIXTURESSolvent Extraction and Ion Exchange, 1984
- Synthesis and crystal and molecular structure of bis(nitrato)[diisopropyl (N,N-diethylcarbamyl)methylenephosphonate]dioxouranium(VI)Inorganic Chemistry, 1983
- Selected Alkyl(phenyl)-N,N-dialkylcarbamoylmethylphosphine Oxides as Extractants for Am(III) from Nitric Acid MediaSeparation Science and Technology, 1982
- Synthesis and crystal and molecular structures of diisopropyl N,N-diethylcarbamylmethylenephosphonate samarium nitrate and erbium nitrate complexesInorganica Chimica Acta, 1982
- Synthesis and crystal and molecular structure of a [diethyl (N,N-diethylcarbamyl)methylenephosphonate]thorium nitrate complexInorganic Chemistry, 1982
- The Extraction of Am(III) and Fe(III) by Selected Dihexyl N,N-Dialkylcarbamoylmethyl-phosphonates, -Phosphinates and -Phosphine Oxides from Nitrate MediaSeparation Science and Technology, 1981
- The Extraction of Selected Transplutonium(III) and Lanthanide(III) Ions by Dihexyl-N, N-diethylcarbamoylmethylphosphonate from Aqueous Nitrate MediaSeparation Science and Technology, 1981
- The Extraction of Th(IV) and U(VI) by Dihexyl-N, N-diethylcarbamoylmethylphosphonate from Aqueous Nitrate MediaSeparation Science and Technology, 1981
- Phosphine oxides complexes of neodymium(III) nitrateInorganic and Nuclear Chemistry Letters, 1978