Figure 4
The crystal packing of (II), viewed along the a axis, illustrating the hexameric arrangement of trimeric hydrogen-bonded columns of Cf molecules A (green in the electronic version of the paper), B (blue) and C (magenta). Hydrogen bonds are shown as dashed lines, and the pseudo-31 screw axis is highlighted in the upper part of the diagram. Fully occupied water molecules OW8–OW11, which are hydrogen bonded to Cf molecules, are shown as balls and sticks. Disordered water molecules occupying the channel along the a axis are depicted as orange spheres. [Symmetry codes: (i) −x + 1, −y + 1, −z + 1; (ii) −x, −y + 1, −z + 1; (iii) x − 1, y − 1, z; (iv) −x + 1, −y, −z; (v) x, y − 1, z.] |