45Sc-NMR

Figure 5 45Sc NMR spectra of [Sc(BH4)3(thf)2].87 (A) normal spectrum (B) H decoupled spectrum (C) 11B decoupled spectrum (D) 1H and 11B decoupled spectrum (reproduced by permission of the American Chemical Society from Inorg. Chem., 1984, 23, 1072-1078).

Groups 3 and 4. 45Sc NMR spectroscopy was used to follow the formation of complexes between ScCl3 and podand ligands (inorganic esters of polyoxyethylene glycols).1116... 

FIGURE 8.19 45Sc NMR spectra of scandium extracts from hydrochloric media by liquid TBP (1), TVEX-TBP (2), and 50 % TBP solution in CC14 (3). 

FIGU RE 8.22 45Sc NMR spectra of TVEX-TBP after different number of extraction-reextraction cycles. 

Y. Knzovov, V. Korovin, V. Savel eva, and A. Komarov. 31P, 45Sc NMR Comparison of mechanisms of rare metals extraction by solvent extractants and ones introduced in TVEX porous matrix, Proc. ISEC 88, 3, 159—162 (1988). 

V. Korovin, S. Randarevich, S. Bodaratsky, and V. Trachevsky, Scandium extraction from sulfuric solutions by TBP and TVEX-TBP based on data of 31 and 45Sc NMR spectroscopy, Rus. J. Inorg. Chem., 34, 2404 (1990). 

V. Korovin, S. Randarevich, Y. Pogorelov, and S. Bodaratsky, Scandium extraction hy tri-butylphosphate solvent and supported on TVEX polymer matrix from hydrochloric solutions based on 31P and 45Sc NMR data, Rus. J. Coord. Chem., 22, 633-640 (1996). 

V. Korovin and Y. Pogorelov, Effect of TVEX-TBP polymer matrix on scandium extraction based on 31P and 45Sc NMR data, Ukrainian Chem. J., 60, 695-698 (1994). 

In this section, we will be concentrating mainly on the use of NMR technique based literature on dipolar glasses and the information obtained from them. The NMR nuclei studied in dipolar glasses are 1H, 2H and 87Rb and 31P. 207Pb, 45Sc and 93Nb are other nuclei which are studied in relaxor materials. 

The periodates of Sc and Y, M(H20)3[I04(0H)2], have been examined by 45Sc and 89Y NMR, and the crystal structure of the yttrium compound determined.244 In the crystal eight water molecules surround the yttrium atom. 

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