
%0 Journal Article
%A Bakas, AE 
%A Hounslow, AM 
%A Lincoln, SF 
%A Maeji, NJ 
%T A preparative and phosphorus-31 nuclear magnetic resonance study of the coordination of three phosphate based ligands to dioxouranium(VI)
%J Australian Journal of Chemistry
%D 1982/07/01
%V 35
%N 7
%P 1489-1492
%K 
%R https://doi.org/10.1071/CH9821489
%U https://www.publish.csiro.au/paper/CH9821489 
%X The three species [UO2{OP(OMe)(NMe2)2}4](ClO4)2, [UO2{OP(OMe)2(NMe)}5] (C1O4)2 and [UO2{OPMe2Ph)]5] (ClO4)2 have been isolated and their CD2Cl2 solutions studied by means of 31P n.m.r. An equilibrium between [UO2L52+ and [UO2L4]2+ exists in solutions of the first two species. In solutions of the third species [UO2L5]2+ predominates and ligand exchange proceeds through a dissociative D mechanism for which kex (285 K), characterizing a single ligand, is 1830 ± 250 s-1, &#916;H&#8225; 82.15 ± 1.8 kJ mol-1 and &#916;S&#8225; 106 ± 16 JK-1 mol-1. 
