Figure 5
(a) The fourfold hydrogen-bonding interactions of the HMTA molecules with four water molecules. Note that the acid molecules have been displaced from their expected hydrogen-bonding interaction to HMTA, and now hydrogen bond to the water molecules instead. (b) Packing diagram down the b axis, showing the interdigitated chains. H atoms not involved in hydrogen bonding are omitted for clarity. Symmetry codes: (i) . |