Synthesis, crystal structure, and conductivity investigation of a new monophosphate:: (2-CH3OC6H4CH2NH3)H2PO4

Chemical preparation, crystal structure, thermogravimetric and differential analysis, solid state P-31 MAS NMR characterization, and IR spectroscopic investigations are given for a new organic cation dihydrogenmonophosphate, (2-CH3OC6H4CH2NH3)H2PO4. This compound is monoclinic C2/c, with unit cell parameters a = 27.740(8), b = 4.827(2), c = 16.435(3) angstrom, beta = 93.79(2)degrees, V = 2196 (1) angstrom(3) , Z = 8, and rho = 1.422 g(.)cm(-3) . The crystal structure has been determined and refined to R = 0.046 (Rw = 0.056), using 1,746 independent reflections with I > 3 sigma(I). Its atomic arrangement can be described by infinite polyanions [H2PO4](n)(n-), organized in ribbons alternating with organic cations. Strong hydrogen bonds connect the different components. Electrical conductivity measurements show that the [2-CH3OC6H4CH2NH3]H2PO4 has a low ionic conductivity value at 403 K.