Reduced Schiff bases with a common p-nitro-o-phenylenediamine moiety have been synthesised and their structures have been characterized by single-crystal structural analysis. Schiff bases having self-complementary H-bond donors and H-bond acceptors can form a âscissorsâ like structure through intermolecular H-bonding interaction. Reduced Schiff bases interact with biologically important dihydrogenphosphate ion and form stable complexes. Furthermore, dihydrogenphosphate and water form an unprecedented self-assembled dihydrogenphosphateâwater [H2PO4·H2O]nnâ 1D supramolecular polymer upon complexation with reduced Schiff bases.
A series of compounds with an amine based structural motif (ASM) have been synthesized for efficient atmospheric CO2 fixation. The H-bonded ASM bicarbonate complexes were formed with an in situ generated HCO3- ion. The complexes have been characterized by IR, C-13 NMR, and X-ray single-crystal structural analysis. ASM bicarbonate salts have been converted to pure ASMs in quantitative yield under mild conditions for recycling processes.