ISOPROPYLAMMONIUM DIHYDROGENMONOPHOSPHATE AND ISOPROPYLAMMONIUM MONOHYDROGENPHOSPHITE

The atomic arrangements in isopropylammonium dihydrogenmonophosphate and isopropylammonium monohydrogenphosphite are described. In the phosphate, the distances between the H2PO4 groups are rather short (P-P = 4.238 and 4.218 angstrom) so that these entities form (through strong hydrogen bonds) infinite (H2PO4)n chains parallel to the a direction. In spite of the significantly longer (4.769 angstrom) P-P distance, the (HPO3H)n groups in the phosphite compound also form infinite chains running parallel to the a direction. In the phosphate derivative, linear arrays or the isopropylammonium groups spread parallel to the c direction, i. e. perpendicular to the phosphoric chain, while in the phosphite compound the arrays of the organic component and the phosphoric chains are parallel.