Crystal Engineering of Multiple-component Organic Compound: Organic co-Crystals of the Functional Groups of Carboxyl and Amino with Persistent Hydrogen Bonding Motifs

Three small organic molecular co-crystal compounds (C3N6H6)center dot(C6H10O4)center dot H2O(1), C3H8N2O(3) and (H(4)btec)(2)center dot(4,4'-bipy)(4)(H(4)btec=1,2,4,5-benzenetetracarboxylic acid, 4,4'-bipy=4,4'-bipyridine) and one coordination supramolecular compound [Mn(C2O4)(H2O)(2)]center dot C6HIINO2(2) were synthesized by hydrothermal reaction. They were characterized by elemental analysis, infrared(IR) spectroscopy and single crystal X-ray diffraction(XRD). Structural analyses reveal that these 2D or 3D supramolecular networks of the compounds were formed by C-H center dot center dot center dot O, N H-O, N-H center dot center dot center dot N, O-H center dot center dot center dot O and O-H center dot center dot center dot N hydrogen bonds. Therein, the functional groups of -COOH, -NH2 and -OH play important roles in constructing supramolecular architectures.