title: Synthesis and crystal structure of 4-fluoro-benzyl-ammonium di-hydrogen phosphate, [FC6H4CH2NH3]H2PO4.
abstract: The asymmetric unit of the title salt, [p-FC6H4CH2NH3]+·H2PO4-, contains one 4-fluoro-benzyl-ammonium cation and one di-hydrogen phosphate anion. In the crystal, the H2PO4-anions are linked by O-H⋯O hydrogen bonds to build corrugated layers extending parallel to theabplane. The FC6H4CH2NH3+cations lie between these anionic layers to maximize the electrostatic inter-actions and are linked to the H2PO4-anions through N-H⋯O hydrogen bonds, forming a three-dimensional supra-molecular network. Two hydrogen atoms belonging to the di-hydrogen phosphate anion are statistically occupied due to disorder along the OH⋯HO direction.
authors.affiliation: Unité de Recherche, Catalyse et Matériaux pour l'Environnement et les Procédés, URCMEP, (UR11ES85), Faculté des Sciences de Gabès, Campus Universitaire, 6072 Gabès, Tunisia.
authors.forename: Ali
authors.initials: A
authors.lastname: Rayes
authors.affiliation: Unité de Recherche, Catalyse et Matériaux pour l'Environnement et les Procédés, URCMEP, (UR11ES85), Faculté des Sciences de Gabès, Campus Universitaire, 6072 Gabès, Tunisia.
authors.forename: Ahlem
authors.initials: A
authors.lastname: Dadi
authors.affiliation: Laboratoire des Sciences des Matériaux et d'Environnement, Faculté des Sciences, Université de Sfax, BP 1171, Route de Soukra, 3018 Sfax, Tunisia.
authors.forename: Najla
authors.initials: N
authors.lastname: Mahbouli Rhouma
authors.affiliation: Dipartimento di Chimica, Universitá di Parma, Parco Area delle Scienze 17A, I-43124 Parma, Italy.
authors.forename: Francesco
authors.initials: F
authors.lastname: Mezzadri
authors.affiliation: Dipartimento di Chimica, Universitá di Parma, Parco Area delle Scienze 17A, I-43124 Parma, Italy.
authors.forename: Gianluca
authors.initials: G
authors.lastname: Calestani
keywords: crystal structure; hydrogen bonds; organic inorganic hybrid materials