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Twelve kinds of rare earth complexes were synthesized using halo-benzoic acid as anion ligand and Sm 3+ and Dy 3+ as central ions, respectively. The complexes were characterized by elemental analysis, rare earth coordination titration and electrospray ionization mass spectra, from which the compositions of the complexes were confirmed to be RE(p-FBA) 3 ·H 2 O, RE(p-ClBA)...
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