Figure 1
(a) The GUI of ShelXle, displaying the structure of thymidine at 20 K (Hübschle et al., 2008). The Fo–Fc map at 0.25 e Å−3 shows features of bonding and lone-pair electron density. Atom O2 is currently selected. (b) An enlargement of the lower-right corner of the screenshot above. |