Fig. 2: Orthographic ball-and-stick visualizations of the three most stable oxygen-terminated diamond (110) surface phases.
From: Coexistence of carbonyl and ether groups on oxygen-terminated (110)-oriented diamond surfaces

a Clean surface, b p(2 × 1)Keto-Ether5, and c p(1 × 1)Peroxide, shown from the [110] direction as a `top-down' view. Carbon and oxygen atoms are shown in gray and red respectively, and the unit cell outlines are shown with black dashed lines. Surface axes are also presented.