Dihydrogen phosphate mediated supramolecular frameworks in 2-and 4-chloroanilinium dihydrogen phosphate salts

The title compounds, 2-chloroanilinium dihydrogen phosphate (2CADHP) and 4-chloroanilinium dihydrogen phosphate (4CADHP), both C6H7NCl+center dot H2PO4-, form two-dimensional supramolecular organic-inorganic hybrid frameworks. In 2CADHP, the dihydrogen phosphate anions form a double-stranded anionic chain generated parallel to the [010] direction through O-H center dot center dot center dot O hydrogen bonds, whereas in 4CADHP they form a two-dimensional supramolecular net extending parallel to the crystallographic (001) plane into which the cations are linked through strong N-H center dot center dot center dot O hydrogen bonds.