Figure 1
(a) Arrangement of cation-centered N/O atoms and (b) the crystal structure illustrated with cation-centered N/O-coordinated polyhedra for Ba0.90Ce0.10LuSi3.80Al0.20N6.90O0.10. Symmetry codes: (i) x, y, z; (ii) x − 1, y, z; (iii) x, y + 1, z; (iv) −y, x − y, z); (v) −y, x − y − 1, z; (vi) −x, −y, z + ); (vii) −y + 1, x − y, z); (viii) −x + y + 1, −x + 1, z; (ix) y, −x + y, z + ; (x) x − y + 1, x, z + ; (xi) −x + 1, −y + 1, z + ; (xii) y, −x + y + 1, z + ; (xiii) x − y, x, z + ; (xiv) −x + y + 1, −x + 2, z; (xv) −y + 1, x − y + 1, z. |