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.

Tris(N,N-di­methyl­anilinium) tri-μ-bromido-bis[tribromido­anti­monate(III)]

In the title compound, (C₈H₁₂N)₃[Sb₂Br₉], two of the three unique N,N-dimethyanilinium cations exhibit flip–flop disorder with an occupancy ratio of 0.58 (1):0.42 (1). N—H...Br hydrogen bonds link the organic cations and bioctahedral face-sharing anions into a three-dimensional network.

catena-Poly[N,N,N′,N′-tetra­methyl­ethylendi­ammonium [[tetra­bromido­antimonate(III)]-μ-bromido] hemihydrate]

The asymmetric unit of the title compound {(C₆H₁₈N₂)₂[Sb₂Br₁₀]·H₂O}_n, consists of two tetra­methyl­ethylendi­ammonium cations that are located on centres of inversion, as well as one tetra­methyl­ethylendi­ammonium cation, one water mol­ecule, one distorted octahedral [SbBr₆]³⁻anion and one bisphenoidal [SbBr₄]⁻ anion in general positions. The [SbBr₆]³⁻ and [SbBr₄]⁻ anions are linked together by two long Sb—Br bonds of 3.2709 (8) and 3.5447 (7) Å into {[Sb₂Br₁₀]⁴⁻}_n chains along [001]. One of the three tetra­methyl­ethylendi­ammonium cations is disordered and was refined using a split model (occupancy ratio 0.58:0.42). The cations and the water mol­ecule are connected to the {[Sb₂Br₁₀]⁴⁻}_n polymeric anions by weak N—H ...Br and O(water)—H ...Br hydrogen bonding.

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.