Abstract
45Sc nmr spectra of aqueous solutions of ScCl 3, ScBr 3, ScI 3, Sc(ClO 4) 3, Sc(NO 3) 3 and Sc 2(SO 4) 3 are reported. The concentration dependence of the chemical shift and the line width have been studied and attempts made to relate these dependences to chemical species in solution. Raman shifts and 45Sc nmr spectra have been obtained for aqueous solutions of ScCl 3 containing 0–12 M added HCl. 45Sc nmr spectra of tetrahydrofuran solutions of ScCl 3, ScCl 3·4H 2O, ScBr 3, ScBr 3·4H 2O, Sc(NO 3) 3, Sc(NO 3) 3·3H 2O and Sc(ClO 4) 3·6H 2O are also reported. A study of 45Sc chemical shifts in water-tetrahydrofuran mixtures has demonstrated the strong solvating power of water towards the scandium (III) ion. The complexation of scandium (III) with some macrocyclic polyether ligands in aqueous solution has been investigated.
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