Figure 3From: Design of co-crystals/salts of some Nitrogenous bases and some derivatives of thiophene carboxylic acids through a combination of hydrogen and halogen bonds(a) Formation of hexameric super molecule in (1a) by the N-H…O and C-H…O hydrogen bonds. (b) Hexameric super molecule of one plane (yellow) linked to the similar kind of hexameric super molecule in another plane (blue) linked by soft C-H…O hydrogen bonds (red dotted lines).Back to article page