365513-09-3Relevant articles and documents
New polypodal polycarboxylic ligands - Complexation of rare-earth ions in aqueous solution
Viguier, Romain,Serratrice, Guy,Dupraz, Agnes,Dupuy, Claude
, p. 1789 - 1795 (2007/10/03)
The complexation ability of new polypodal carboxylic ligands prepared from 2,2-bis(hydroxymethyl)-1-alkanols was investigated in aqueous solution with Y3+ and various lanthanide ions (La3+, Sm3+, Eu3+, Gd3+, Tb3+, Dy3+). The values of the stability constants for ML complexes are of the order of 104 for the hexadentate trioxypropionates, 107 for the hexadentate trioxyacetates and 1014 for the nonadentate triaminohexaacetates. In these systems, the nitrogens of the amino groups seem to be better chelating atoms than the oxygens of the ether groups. The hydration numbers of dysprosium(III) complexes have been determined from the DyIII-induced 17O NMR water shifts.
Polyalkylation of 2,2-bis(hydroxymethyl)-1-alkanols with tert-butyl bromoacetate
Dupuy,Viguier,Dupraz
, p. 1307 - 1313 (2007/10/03)
A series of 2,2-bis(hydroxymethyl)-1-alkanols was poly-O-alkylated in satisfactory yields with the tert-butyl bromoacetate by phase transfer catalysis. The resulting pure polyesters were converted in polyacids in quantitative yields.