Acetate binding within a supramolecular network formed by a guanidiniocarbonyl pyrrole cation in the solid state

[GRAPHICS] The crystal structure of guanidiniocarbonyl pyrrole acetate reveals extended two dimensional hydrogen bonding networks with embedded anion binding sites. These are formed by the guanidinium moiety of one and the pyrrole NH of another cation in combination with an additional water molecule. Hence, the acetate is bound by the same kind of interactions as those previously found in the solution state complex, but as part of an extended supramolecular hydrogen bonding network and not in form of a discrete 1:1 complex.