89Y-NMR

Y NMR has also been reported extensively from yttrium sialon ceramics. Yttria is an important sintering aid for densifying silicon nitride. The properties of the sialon produced are determined by the nature of the grain boundary phase, which is usually a crystalline or glassy yttrium sialon. The often disordered nature of such phases can mean that broader 89Y resonances are... 

The thermodynamic parameters of the thiocyanato complexes are similar to those of lanthanide bromo complexes and the latter are outer-sphere complexes in DMF. Contrary to this 89Y NMR spectra suggest an inner-sphere Y(III)-NCS complex. 

Figure 8 89Y NMR of Y50(0Pr )13 showing the presence of two inequivalent yttrium atoms in the molecule...

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. 

Table 2. Summary of 89Y solid-state NMR chemical shifts...

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