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Title: Studies on lanthanide picrate complexes of N,N'-dinaphthyl-N,N' -diphenyl-3,6-dioxaoctanediamide and their extractability
Authors: Liu, Shi-Xia
Liu, Wei-Sheng
Tan, Min-Yu
Issue Date: Mar-1997
Publisher: NISCAIR-CSIR, India
Abstract: Lanthanide picrate complexes with N,N'-dinaphthyl-N,N'-diphenyl-3, 6-dioxaoctanediamide (DDD), Ln(Pic)3 (DDD) (Ln=Ce, Nd, Eu, Tb, Er, Y) have been prepared and characterized by elemental analysis, conductivity measurements, IR, 1H NMR and UV-VIS spectra. In all complexes, DDD shows quadridentate behaviour. Solvent extraction of light lanthanide picrates with DDD has been carried out in water-nitrobenzene system. The extraction equilibrium constants (Ke) and complexation constants (Kc) in the nitrobenzene phase are determined at 20°C. The Ke values for light lanthanide cations decrease in the order: La3 + >Nd3 + >Eu3 +.
Page(s): 206-209
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.36A(03) [March 1997]

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