FLORIAN , P.

Although the structures of pure Sc2Si2O7 and Β-Y 2Si 2O 7 have been described in the literature using the C2/m space group, 29Si magic angle spinning (MAS) NMR measurements of the intermediate members of the Sc 2Si 2O 7-Β- Y 2Si 2O 7 system indicate a lowering of the symmetry to the C2 space group. Indeed, these compositions exhibit a unique Si...