Figure 1
Structure of MgxLi3 − xMg48 − y showing the atom-labelling scheme and displacement ellipsoids drawn at the 30% probability level. Two kinds of boride polyhedra are indicated – green [B12] icosahedra and yellow fused [B21] double icosahedra – and the two mixed Li/Mg sites M1 and M2. [Symmetry codes: (i) −y + 1, −x + 1, −z + ; (ii) −y + , x + , z − ; (iii) x + , −y + 1.5, −z + ; (iv) y, x, −z.] |