Figure 3
A detailed view of the hydrogen bonds surrounding one nucleoside molecule. Hydrogen bonds are indicated by dashed lines. (In the electronic version of the paper, the bifurcated hydrogen bonds are shown in green and the hydrogen bonds with large distances are shown in yellow; the remaining hydrogen bonds are shown in black.) H atoms of (I) and some groups which are not involved in hydrogen bonds have been omitted for clarity. (In the electronic version of the paper, atoms are coded as follows: red for oxygen, blue for nitrogen, grey for carbon and white for hydrogen.) [Symmetry codes: (ii) −x, y − , −z + ; (iii) −x + 1, y−, −z + ; (iv) −x, y + , −z + ; (v) x − 1, y − 1, z.] |