Acta Cryst. (2009). E65, m583-m584  [ doi:10.1107/S1600536809015189 ]

Bis(2,6-diamino-3,5-dibromopyridinium) hexabromidostannate(IV)

R. H. Al-Far, S. F. Haddad and B. F. Ali

Abstract: The asymmetric unit of the title compound, (C₅H₆Br₂N₃)₂[SnBr₆], contains one cation and one half-anion in which the Sn atom is located on a crystallographic centre of inversion and is in a quasi-octahedral geometry. The crystal structure is assembled via hydrogen-bonding interactions of two kinds, N(pyridine/amine)-HBr-Sn, along with C-BrBr-Sn interactions [3.4925 (19) Å]. The cations are involved in - stacking, which adds an extra supramolecularity as it presents a strong case of offset-face-to-face motifs [centroid-centroid distance = 3.577 (3) Å]. The intermolecular hydrogen bonds, short BrBr interactions and - stacking result in the formation of a three-dimensional supramolecular architecture.

Online 30 April 2009

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