Figure 4
From: Silicene oxides: formation, structures and electronic properties

Optimized structures of silicene oxides with (a) Oqb+Odb, (b) Oqb +
, (c) Oqb +
, (d) Oqb + OHtl, (e) Oqb + OHul, (f) Oqb + OHbl and (g) Oqb+OHal.
Both top and side views are shown. The unit cell of each structure is indicated by a rhombus or rectangle. Si, O and H atoms are denoted by green, red and grey balls, respectively.