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Title: Complexation of actinides with derivatives of oxydiaceticacid

Complexation of Np(V), U(VI) and Nd(III) with dimethyl-3-oxa-glutaramic acid (DMOGA) and tetramethyl-3-oxa-glutaramide (TMOGA) was studied in comparison with the complexation with oxydiacetic acid (ODA). Stability constants and enthalpy of complexation were determined by potentiometry, spectrophotometry and calorimetry. Thermodynamic parameters, in conjunction with structural information of solid compounds, indicate that DMOGA and TMOGA form tridentate complexes with the ether-oxygen participating in bonding with actinide/lanthanide ions. The trends in the stability constants, enthalpy and entropy of complexation are discussed in terms of the difference in the hydration of the amide groups and carboxylate groups and the difference in the charge density of the metal ions.
Authors:
;
Publication Date:
OSTI Identifier:
891220
Report Number(s):
LBNL--59274
R&D Project: 403006; BnR: KC0302030; TRN: US200621%%680
DOE Contract Number:
DE-AC02-05CH11231
Resource Type:
Conference
Resource Relation:
Conference: Materials Research Society Meeting, Boston, MA,Nov. 28-Dec. 2, 2006
Publisher:
Materials Research Society,none
Research Org:
Ernest Orlando Lawrence Berkeley NationalLaboratory, Berkeley, CA (US)
Sponsoring Org:
USDOE Director. Office of Science. Office of AdvancedScientific Computing Research. Office of Basic EnergySciences
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ACTINIDES; AMIDES; BONDING; CALORIMETRY; CHARGE DENSITY; ENTHALPY; ENTROPY; HYDRATION; POTENTIOMETRY; SPECTROPHOTOMETRY; STABILITY; THERMODYNAMICS