catena-Poly[diquinolinium [[diaqua­cobaltate(II)]-μ-cyclo­tetra­phosphato] hexa­hydrate]

The cyclo­tetra­phosphate anion, [P4O12]4−, forms the title complex with cobalt(II) and quinolinium, {(C9H8N)2[Co(P4O12)(H2O)2]·6H2O}n. In the complex anion, the CoII ion, lying on an inversion center, is surrounded by four phosphate O atoms and two water mol­ecules in a slightly distorted octa­hedral geometry. The crystal structure consists of anionic ribbons of formula {[Co(P4O12)(H2O)2]2−}n extending along [100]. A network of O—H⋯O, N—H⋯O and C—H⋯O hydrogen bonds consolidates the crystal packing

Bis(3-ammonio­methyl­pyridinium) cyclo­tetra­phosphate

In the title compound, 2C6H10N2 2+·P4O12 4−, which involves a doubly protonated 3-ammonio­methyl­pyridinium cation and a cyclo­tetra­phosphate anion, the cyclo­tetra­phospho­ric ring is arranged around an inversion center and the organic entity alternates with it, forming hybrid ribbons parallel to the b axis. The crystal structure is stabilized by a three-dimensional network of N—H⋯O and weaker C—H⋯O hydrogen bonds

Bis(homopiperazine-1,4-diium) cyclotetraphosphate–telluric acid (1/2)

The title compound, 2C5H14N22+·P4O124−·2Te(OH)6, involves doubly protonated homopiperazinium cations, cyclotetraphosphate anions and telluric acid molecules. The framework possesses very large channels wherein the organic cations reside. A network of O—H...O, N—H...O and C—H...O hydrogen bonds consolidates the crystal packing