Synthesis and crystal sructure of a new dihydrogenomonophosphate (4-C2H5C6H4NH3)H2PO4

Chemical preparation, crystal structure, calorimetric, and spectroscopic investigations are given for a new organic-cation dihydrogenomonophosphate, (4-C2H5C6H4NH3)H2PO4 in the solid state. This compound crystallizes in the orthorhombic space group Pbca with the following unit cell parameters: a=8.286(3) Å, b=9.660(2) Å, c=24.876(4) Å, Z=8, V=1991.2(7) Å3, and DX=1.442 g cm−3. Crystal structure was solved with a final R=0.054 for 3305 independent reflections. The atomic arrangement coaled described as H2PO4− layers between which are located the 4-ethylanilinium cations.