Dihydrogen phosphate-water tape and layers vs dihydrogen phosphate layers tuned by hydrophobic isomeric pyridine-diamine functionalized molecules

Nine salts assembled from three isomeric pyridyine-diamine-based molecules and H3PO4 in different ratio were obtained, which show diverse tape, double, sandwiched, (6,3), (4,4), V2O5-type and (63)2(66) layers constructed by H2PO4− anions and its combination with H3PO4 and water molecules.