Citric complexes, neodymium citrate and americium citrate
Description
The behaviour of neodymium and americium has been studied in citric aqueous medium by two methods: solvent extraction of elements at tracer scale as chelates and by potentiometry. So range of pH and concentrations of elements and citric acid never reached before have been explored: 10-7 < Csub(Nd) < 10-1 M, 10-10 < Csub(Am) <=2x10-3, Csub(H3 Cit) <=3x10-1M, 12O; AmCit, xH2O; NdCit2Co(NH3)6, 8H2O; AmCit2Co(NH3)6, xH2O and Nd3(OH)4(Cit)4NH4(Co(NH3)6)2, 18H2O. Their spectroscopic and crystallographic characteristics have been listed and studied. The nephelauxetic effect has been estimated from citric complexes as well as from citrates of these elements. The structure of the complexes in solution has been discussed on the basis of analysis of hypersensitive transition in different complexes.
Abstract (French)
Le comportement du neodyme et de l'americium a ete etudie en milieux aqueux citriques par deux methodes: l'extraction par solvant a l'etat de chelate des elements a l'echelle des indicateurs et la potentiometrie. Ainsi ont pu etre explores des domaines de pH et de concentrations en elements et en acide citrique jamais atteints: 10-7 < Csub(Nd) < 10-1M, 10-10 < Csub(Am) <= 2.10-3M, Csub(H3 Cit) <= 3.10-1M, 12O; AmCit, xH2O; NdCit2Co(NH3)6, 8H2O; AmCit2Co(NH3)6, xH2O et Nd3(OH)4(Cit)4 NH4(Co(NH3)6)2, 18H2O. Leurs caracteristiques spectroscopiques et cristallographiques ont ete relevees et analysees. L'effet nephelauxetique a ete estime aussi bien sur les complexes citriques que sur les citrates de ces elements. La structure des complexes en solution a ete discutee a la lumiere de l'analyse des transitions hypersensibles dans les differents complexes.Files
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Additional details
Additional titles
- Original title (French)
- Complexes citriques et citrates de neodyme et d'americium
Publishing Information
- Imprint Pagination
- 187 p.
- Report number
- IPNO-T--81-07
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 51120098
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
- Resource subtype / Literary indicator
- Thesis
- Descriptors DEI
- AMERICIUM COMPLEXES; AMERICIUM COMPOUNDS; AQUEOUS SOLUTIONS; CHELATES; CHEMICAL COMPOSITION; CITRATES; CRYSTAL STRUCTURE; LIGANDS; NEODYMIUM COMPLEXES; NEODYMIUM COMPOUNDS; PH VALUE; POTENTIOMETRY; SPECTROPHOTOMETRY
- Descriptors DEC
- ACTINIDE COMPLEXES; ACTINIDE COMPOUNDS; CARBOXYLIC ACID SALTS; CHEMICAL ANALYSIS; COMPLEXES; DISPERSIONS; HOMOGENEOUS MIXTURES; MIXTURES; QUANTITATIVE CHEMICAL ANALYSIS; RARE EARTH COMPLEXES; RARE EARTH COMPOUNDS; SOLUTIONS; TITRATION; TRANSPLUTONIUM COMPOUNDS; TRANSURANIUM COMPLEXES; TRANSURANIUM COMPOUNDS; VOLUMETRIC ANALYSIS
Optional Information
- Notes
- Available from the INIS Liaison Officer for France, see the INIS website for current contact and E-mail addresses; This record replaces 13691518