Figure 4
The representative hydrogen-bonded ring motifs (shown by dotted lines) found within the hydrogen-bonded framework of 1, viz. the tetrameric R42(8) and R44(10) motifs, a dimeric R22(8) motif and a pentameric R54(16) motif. The polymeric chains of {[Ni(4,4′-bpy)(H2O)4]2+}n are represented as momomeric molecules and shown in red, and various symmetry-related 6-chloronicotinate anions are shown in brown, green, blue and pink (see text). |