摘要:
                                Chemical preparation crystal structure and spectroscopic investigations are given for a new organic-cation dihydrogenomonophosphate (C9H11N4) H2PO4 in the solid state. This compound crystallizes in the monoclinic space group P 2(1) with the following unit cell parameters: a = 9.640 (5) angstrom. b = 4.582 (5) angstrom. c= 14.094 (5)angstrom, beta=106.979 (5)degrees Z= 2, V=595.4 (7)angstrom(3). Crystal structure was solved with a final R= 0.054 for 2077 independent reflections. The atomic arrangement can be described as inorganic layers of H2PO4- anions between which are located the organic groups. Solid-state C-13 and P-31 MAS-NMR spectroscopies are in agreement with the X-ray structure. Ab initio calculations allow the attribution of the phosphorous and carbon signals to the independent crystallographic sites and to the various atoms of the organic groups. (C) 2014 Elsevier B.V. All rights reserved.