Figure 3
(a) The polyhedron formed around the Al3 atom at the 4c site; (b) the environment of the Al3 atom with displacement ellipsoids given at the 90% probability level. [Symmetry codes: (iii) −x + , −y + , −z + 1; (iv) x − , −y + , −z + 1; (v) −x, y, z; (vii) −x, y, −z + ; (xx) x, y, −z + ; (xxi) −x + , −y + , z − ; (xxii) x − , −y + , z − .] |