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inorganic compounds
Crystals of a new nesosilicate, tricalcium diyttrium trisilicon oxide, Ca3Y2(SiO4)3, were prepared from a silicate melt by slow cooling. The structure was refined in space group Pnma and has nine-, eight- and seven-coordinate sites for Ca2+ and Y3+ cations. The structural formula can be expressed as (Ca0.84Y0.16) (Ca0.41Y0.59)2 (Ca0.67Y0.33)2 (SiO4)3.
