2-Meth­oxy­anilinium trichlorido­stannate(II)

The title compound, (C₇H₁₀NO)[SnCl₃], is a new compound with non-linear optical (NLO) properties. The structure is pseudocentrosymmetric; the absence of an inversion centre was proved by the Kurtz and Perry method showing a significant second harmonic generation (SHG) signal about ten times lower than that from potassium dihydrogenphosphate. The crystal structure exhibits alternating organic and inorganic layers parallel to the ab plane, which are stabilized by inter­molecular N—H...Cl inter­actions.

Ethyl­enedi­ammonium chloride thio­cyanate

In the ethyl­enedi­ammonium dication of the title salt, C₂H₁₀N₂²⁺·Cl⁻·SCN⁻, the N—C—C—N torsion angle is 72.09 (12)°. In the crystal, an extensive three-dimensional hydrogen-bonding network, formed by N—H...Cl and N—H...N hydrogen bonds, holds all the ions together.

Bis(2-meth­oxy­anilinium) hexa­bromido­stannate(IV) dihydrate

The asymmetric unit of the title compound, (C₇H₁₀NO)₂[SnBr₆]·2H₂O, contains one cation, one half-dianion and one lattice water mol­ecule. The [SnBr₆]²⁻ dianion, located on an inversion center, exhibits a highly distorted octa­hedral coordination environment, with Sn—Br bond lengths ranging from 2.2426 (9) to 3.0886 (13) Å. In the crystal, O—H...Br, N—H...Br, N—H...O and C—H...Br hydrogen bonds consolidate the packing, which can be described as consisting of alternating anionic (containing dianions and lattice water mol­ecules) and cationic layers parallel to ab plane.