The property of organotin compounds, R2SnX2 (X = halogen), as Lewis acids has been utilized to prepare tetrahalodiorganoastannates, [R2SnX4]–2.1 A search of the Cambridge Structural Database (CSD) shows that 17 structures including [R2SnX4]–2 anions were deposited. Some examples are as follows: bis(dimethylammonium) tetrachloro-dimethyl-tin(IV) (CSD refcode ERIPIF; Diop et al., 2011)2, bis(4-nitroanilinium) tetrachloro-dimethyl-tin(IV) (CSD refcode HAXQIH; Gholivand et al., 2005)3 and bis(2-aminopyridinium) dimethyl-tetrachloro-tin(IV) (CSD refcode GEKDEF; Valle et al., 1988)4. Here, the structure of a new organotin(IV) compound with formula [(C3H7)2NH2+]2[Sn(CH3)2Cl4]–2 is reported. The crystal belongs to space group P2(1)/n with cell dimensions a = 10.9199(3) Å, b = 13.1459(3) Å, c = 17.8167(5) Å, α = 90.00°, β = 107.328(3)°, γ = 90.00°; the final R value is 0.0306. The cations and anions are aggregated in a two-dimensional arrangement along the ab plane, produced by intermolecular [N—H]2…Cl hydrogen bonds. Each [Sn(CH3)2Cl4]–2 anion is connected to four dipropylammonium cations trough the hydrogen bonds noted (Fig. 1). Fig. 1 The 2-D arrangement of cations and anions in the title structure is represented, produced by intermolecular [N—H]2…Cl hydrogen bonds.

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