Synthesis,Crystal Structure,and NMR Spectroscopy of a New P-Phenylenediamonium Diphosphate [p-NH3C6H4NH3]H2P2O7 |
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| Authors: | M. L. Mrad C. Ben Nasr M. Rzaigui F. Lefebvre |
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| Affiliation: | 1. Laboratoire de Chimie des Matériaux, Faculté des Sciences de Bizerte, Zarzouna , Bizerte, Tunisie;2. Laboratoire de Chimie Organométallique de Surface (LCOMS) , Ecole Supérieure de Chimie Physique Electronique , France |
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| Abstract: | Crystal growth and characterization by X-ray diffraction and NMR spectroscopy of a new p-phenylenediamonium diphosphate [p-NH3 C 6 H 4 NH 3]H 2 P 2 O 7 are reported. This compound crystallizes in a triclinic unit cell P1 with the parameters a = 7.130(3), b = 9.047(3), c = 9.350(2) Å, α = 133.44(2)°, β = 95.02(2)°, γ = 107.11(4)°, Z = 2, V = 514.3(15) Å3, and D x = 1.848 g.cm? 3. The crystal structure has been solved and refined to R = 0.0273, using 3678 independent reflections. The atomic arrangement is build up by infinite ribbons of [H2 P 2 O 7] 2? anions, extending along the a-direction at y = 1/2. Between these ribbons are located the p-phenylenediammonium entities, which form hydrogen bonds N─H…O with some external oxygen atoms of phosphoric groups. Crystallographic results are correlated with that of the solid state 13C and 31P MAS NMR spectroscopy. |
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| Keywords: | Hydrogen bonds NMR spectroscopy ribbons X-ray diffraction |
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