Synthesis and crystal structure of two supramolecular compounds constructed from amantadine and polyoxometalate

Two organic–inorganic hybrid compounds based on amantadines and polyoxometalates formulated as (C10H18N)4(H2V10O28)·2DMF·2H2O (1) and (C10H18N)3(PMo12O40) (2), were synthesized and structurally characterized by elemental analysis, single-crystal X-ray diffraction analysis, IR, UV and TGA. Compounds 1 and 2 consist of protonated amantadines together with different polyoxometalates, [H2V10O28]4− and [PMo12O40]3−, respectively. There are hydrogen bonding interactions and electrostatic attractions between polyoxometalates and amantadines in 1 and 2. Polyoxometalates are linked through amantadines into a two-dimensional network via hydrogen bonds in the two compounds. The two-dimensional framework is further extended into supramolecular network by hydrophobic interaction of amantadines between adjacent layers. The crystal packing patterns of the two compounds reveal various supramolecular framework.