Figure 2
(a) The two-dimensional hydrogen-bonded network formed between the phosphonate sites of the hydrogen bis(4-carboxyphenylphosphonate) monoanions on the surface of the bilayer. Aromatic rings and carboxyl groups have been omitted for clarity. (b) The arrangement of the aromatic rings and carboxyl groups in the interior of the bilayer. The H atoms of the aromatic rings have been omitted for clarity. [Symmetry codes: (iv) x, −y + , z − ; (vi) x, −y + , z + ; (viii) x, y + 1, z.] |