Poly[[(μ₄-1,3,5-triamino-1,3,5-tride­oxy-cis-inositol)sodium] bromide]

In the structure of the title compound, {[Na(C₆H₁₅N₃O₃)]Br}_n, the sodium cation and the bromide anion are both located on threefold rotation axes. The sodium cation is bonded to the three hy­droxy groups of one 1,3,5-triamino-1,3,5-tride­oxy-cis-inositol (taci) ligand, with the taci ligand residing around the same threefold rotation axis as the sodium ion. The coordination sphere of the sodium ion is completed by three amino groups of three neighbouring taci mol­ecules. Hence, this type of coordination constitutes a three-dimensional open framework with channels along the c axis which are filled with the bromide counter-anions. Each bromide ion forms three symmetry-related hydrogen bonds to both the hy­droxy and the amino groups of neighbouring taci ligands.

Bis(3-aza­niumylpyridin-1-ium) hexa­chloridostannate(IV) dichloride

The asymmetric unit of the title compound, (C₅H₈N₂)₂[SnCl₆]Cl₂, consists of one 3-aza­niumylpyridin-1-ium dication and one chloride ion in a general position and a hexa­chloridostannate(IV) dianion lying about a centre of inversion. The [SnCl₆]²⁻ anion exhibits almost perfect octa­hedral geometry. The 3-aza­niumylpyridin-1-ium and chloride ions are connected via medium–strong charge-supported N—H...Cl hydrogen bonds, forming undulating layers in the (110) plane. The [SnCl₆]²⁻ ions are located between these layers and occupy cavities formed by two facing layer puckers.