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.

catena-Poly[[bis­(2-meth­oxy­aniline-κN)cadmium]-di-μ-thio­cyanato-κ²N:S;κ²S:N]

The structure of the title compound, [Cd(NCS)₂(C₇H₉NO)₂]_n, consists of cadmium–thio­cyanate layers parallel to the ab plane. Pairs of Cd^II ions are bridged by two end-to-end inversely bridging μ-NCS-N:S thio­cyanate groups, forming a two-dimensional network with the remaining two trans positions of the octa­hedrally coordinated Cd^II ions occupied by the N atoms of two neutral 2-meth­oxy­aniline ligands. The crystal structure is stabilized by intra­layer N—H...S hydrogen bonds.

Tris(N,N-di­methyl­anilinium) hexa­bromido­stannate(IV) bromide

In the title compound, (C₈H₁₂N)₃[SnBr₆]Br, the anilinium N atom of one of the three unique cations exhibits flip-flop disorder with an 0.60:0.40 occupancy ratio. In the crystal, N—H...Br hydrogen bonds link the N,N-di­methyl­anilinium cations and both Br⁻ anions and [SnBr₆]²⁻ dianions into a layered arrangement parallel to (001).

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.

Bis(3-aza­niumylprop­yl)aza­nium hexa­chlorido­bis­muthate(III) monohydrate

The asymmetric unit of the title compound, (C₆H₂₀N₃)[BiCl₆]·H₂O, consists of a triprotonated bis­(3-aza­niumylprop­yl)aza­nium cation, two halves of an octahedral [BiCl₆]³⁻ anion, each of the Bi^III atoms lying on an inversion centre, and a water mol­ecule. In the crystal, the anions and water mol­ecules are linked by O—H...Cl hydrogen bonds, forming chains running parallel to [0-11]. The anionic chains and the cations are further linked into a three-dimensional network by N—H...Cl and N—H...O hydrogen-bond 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.

Poly[bis­(μ₂-1,3-phenyl­enedi­amine-κ²N:N′)di-μ-thio­cyanato-κ²N:S;κ²S:N-cadmium]

The structure of the title polymeric compound, [Cd(SCN)₂(C₆H₈N₂)₂]_n, exhibits a two-dimensional staircase-like structure parallel to (010) in which the Cd^II atom lies on a twofold rotation axis and has a distorted octa­hedral CdS₂N₄ geometry involving four μ-1,3-(SCN) group donors and two N-atom donors from 1,3-phenyl­enedi­amine ligands, which also have twofold symmetry. The major contributions to the cohesion and the stability of this two-dimensional polymeric structure are the covalent Cd—S,N bonds and one weak intra­layer N—H...S hydrogen bond.

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.