title: Bis(4-meth-oxy-benzyl-ammonium) dihydrogen diphosphate.
abstract: In the title compound, 2C(8)H(12)NO(+)·H(2)P(2)O(7) (2-), the linked PO(4) groups of the diphosphate anion are almost eclipsed and the P-O-P angle is 134.45 (7)°. In the crystal, infinite ribbons of H(2)P(2)O(7) (2-) anions propagate in [100], being linked by strong O-H⋯O hydrogen bonds. The 4-meth-oxy-benzyl-ammonium cations bond to the diphosphate chains by N-H⋯O and C-H⋯O links, and are themselves linked by C-H⋯π inter-actions.
authors: Laboratoire de Chimie des Matériaux, Faculté des Sciences de Bizerte, 7021 Zarzouna Bizerte,  Tunisia.
authors: Adel
authors: A
authors: Elboulali
authors: Samah
authors: S
authors: Akriche
authors: Salem S
authors: SS
authors: Al-Deyab
authors: Mohamed
authors: M
authors: Rzaigui