2-Amino­pyrimidinium hydrogen sulfate

In the crystal structure of the title compound, C4H6N3 +·HSO4 −, hydrogen sulfate anions self-assemble through O—H⋯O hydrogen bonds, forming chains along the b axis, while the cations form centrosymmetric pairs via N—H⋯N hydrogen bonds. The 2-amino­pyrimidinium pairs are linked to the sulfate anions via N—H⋯O hydrogen bonds, forming a two-dimensional network parallel to (10). In addition, weak inter­molecular C—H⋯O contacts generate a three-dimensional network

Bis(2-methoxybenzylammonium) diaquabis(dihydrogen diphosphato-κ2O,O′)manganate(II) dihydrate

The asymmetric unit of the title compound, (C8H12NO)2[Mn(H2P2O7)2(H2O)2]·2H2O, consists of half an MnII complex anion, a 2-methoxybenylammonium cation and a solvent water molecule. The MnII complex anion lies across an inversion center, and has a slightly distorted octahedral coordination environment for the MnII ion, formed by two bidentate dihydrogendiphosphate ligands and two water molecules. In the crystal, the components are linked by O—H...O and N—H...O hydrogen bonds, forming layers parallel to (100). An intramolecular N—H...O hydrogen bond is also observed

m-Xylylenediaminium diaquabis[dihydrogen diphosphato(2−)]cobaltate(II) dihydrate

In the title complex, (C8H14N2)[Co(H2P2O7)2(H2O)2]·2H2O, the CoII ion lies on an inversion center and is coordinated by two bidentate diphosphate ligands and two water molecules in a slightly distorted octahedral coordination geometry. The m-xylylenediaminium cation is located on a twofold rotation axis. In the crystal, a three-dimensional supramolecular assembly is constructed by O—H...O and N—H...O hydrogen bonds between the organic cations, complex anions and uncoordinated water molecules

Bis(4-methoxybenzylammonium) dihydrogen diphosphate

In the title compound, 2C8H12NO+·H2P2O72−, the linked PO4 groups of the diphosphate anion are almost eclipsed and the P—O—P angle is 134.45 (7)°. In the crystal, infinite ribbons of H2P2O72− anions propagate in [100], being linked by strong O—H...O hydrogen bonds. The 4-methoxybenzylammonium cations bond to the diphosphate chains by N—H...O and C—H...O links, and are themselves linked by C—H...π interactions

Bis(2-methoxybenzylammonium) diaquabis(dihydrogen diphosphato-κ2O,O′)cobaltate(II) dihydrate

The title compound, (C8H12NO)2[Co(H2P2O7)2(H2O)2]·2H2O, crystallizes isotypically with its MnII analogue. It consists of alternating layers of organic cations and inorganic complex anions, extending parallel to (100). The complex cobaltate(II) anion exhibits -1 symmetry. Its Co2+ atom has an octahedral coordination sphere, defined by two water molecules in apical positions and two H2P2O72− ligands in equatorial positions. The cohesion between inorganic and organic layers is accomplished by a set of O—H...O and N—H...O hydrogen bonds involving the organic cation, the inorganic anion and the remaining lattice water molecules

Bis(benzylammonium) dihydrogen diphosphate

The asymmetric unit of the title salt, 2C6H5CH2NH3+·H2P2O72−, contains two independent benzylammonium cations and a dihydrogen diphosphate dianion. In the crystal, O—H...O and N—H...O hydrogen bonds link the cations and anions, forming a two-dimensional network parallel to (010). Within this network, weak C—H...O hydrogen bonds are observed