Bis(4-aminopyridinium) hexachloridostannate(IV) and bis(p-toluidinium) hexachloridostannate(IV)

A new organic-inorganic compound, ethyl-enedi-ammonium hexa-chlorido-stannate(IV) p-anisaldehyde disolvate

The asymmetric unit of the title organic-inorganic hybrid complex [systematic name: ethane-1,2-diaminium hexa-chlorido-stannate(IV)-4-meth-oxy-benz-alde-hyde (1/2)], (C2H10N2)[SnCl6]·2C8H8O2, contains one half of an ethyl-enedi-ammonium cation, one half of an [SnCl6]2- anion and one p-anisaldehyde mol-ecule. Both the organic cation and the quasi-regular octa-hedral inorganic anion are located about inversion centres. The organic cations and [SnCl6]2- anions lie in layers parallel to the ac plane with p-anisaldehyde mol-ecules occupying the space between the layers. A network of classical N-H⋯Cl and N-H⋯O hydrogen bonds exists between the ethyl-enedi-ammonium cations and the [SnCl6]2- anions and p-anisaldehyde mol-ecules. These inter-actions, together with non-classical C-H⋯O inter-actions between the ethyl-enedi-ammonium cations and the p-anisaldehyde mol-ecules, serve to hold the structure together. The crystal studied was refined as a two-component twin.

Crystal structure, optical property and Hirshfeld surface analysis of bis-[1-(prop-2-en-1-yl)-1H-imidazol-3-ium] hexa-chlorido-stannate(IV)

The title structure consists of isolated [SnCl₆]²⁻ octa­hedral anions separated by layers of organic 1-(prop-2-en-1-yl)-1H-imidazol-3-ium (C₆H₉N₂)⁺ cations. The crystal packing features inter­molecular N—H⋯Cl and C—H⋯Cl hydrogen bonds and π–π stacking inter­actions.

A new 0D organic–inorganic hybrid material bis­[1-(prop-2-en-1-yl)-1H-imidazol-3-ium] hexa­chlorido­stannate(IV), (C₆H₉N₂)₂[SnCl₆], has been prepared and characterized by single-crystal X-ray diffraction, Hirshfeld surface analysis and UV–visible spectroscopy. The structure consists of isolated [SnCl₆]²⁻ octa­hedral anions separated by layers of organic 1-(prop-2-en-1-yl)-1H-imidazol-3-ium cations. The 1-(prop-2-en-1-yl) fragment in the organic cation exhibits disorder over two sets of atomic sites having occupancies of 0.512 (9) and 0.488 (9). The crystal packing of the title compound is established by inter­molecular N/C–H⋯Cl hydrogen bond and π– π stacking inter­actions. Hirshfeld surface analysis employing three-dimensional mol­ecular surface contours and two-dimensional fingerprint plots has been used to analyse the inter­molecular inter­actions present in the structure. The optical properties of the crystal were studied using UV–visible absorption spectroscopy, showing one intense band at 208 nm, which is attributed to π–π* transitions in the cations.

Synthesis, crystal structure and Hirshfeld surface of bis-(2-amino-pyridinium) hexa-chlorido-stannate(IV)

In the title mol-ecular salt, (C5H7N2)2[SnCl6], the cation is protonated at the pyridine N atom and the complete dianion is generated by a crystallographic centre of symmetry. In the crystal, N-H⋯Cl hydrogen bonds link the components into a three-dimensional network built up from the stacking of alternate cationic and anionic layers. The nature of the inter-molecular inter-actions has been analysed in terms of the Hirshfeld surfaces of the cations and the anions. The thermal behaviour and the Raman spectrum of the title compound are reported.

X-ray, vibrational and theoretical studies of weak hydrogen bonds in bis(4-nitroanilinium) hexachloridostannate

Crystal structure of bis(4-nitroanilinium) hexachloridostannate, (H4NA)2SnCl6, was determined by means of X-ray single crystal diffraction. In the crystal structure, weak N-H…Cl hydrogen bonds are present. These interactions were taken into consideration in calculations of vibrational spectra for the [(H4NA)Cl4O](5-) anion. Very good agreement between theoretical and experimental frequencies was achieved. The calculations were done at the B3LYP/6-311+G(2d,1p) level including Grimme's correction for dispersion. The relaxed potential energy surface indicated that the energy of H4NA(+) ion is approximately independent upon rotation of the ammonio group. The energy barrier is 0.01 kcal/mol. Therefore the position of the ammonio group can be easily modified the other interacting molecules during molecular self-assembly and crystal growth processes. The energy of the H4NA(+) ion significantly depends on the relative position of the nitro group towards the aromatic ring. The energy barrier of the nitro group is 4.35 kcal/mol.

Bis(diisopropyl-ammonium) hexa-chlorido-stannate(IV)

The title compound, (C(6)H(16)N)(2)[SnCl(6)], crystallizes with one diisopropyl-ammonium cation lying on a general position and the hexa-chloridostannate(IV) anion about a centre of inversion. The [SnCl(6)](2-) anion undergoes a slight distortion from octa-hedral symmetry as the result of the formation of four unforked charge-supported N-H⋯Cl hydrogen bonds. The hydrogen bonds between the cations and anions form layers perpendicular to [101]. These layers are built by 24-membered rings which can be classified with an R(8) (8)(24) graph-set descriptor. According to this hydrogen-bonding motif, the title compound is isostructural with (C(6)H(16)N)(2)[IrCl(6)].

Bis(4-amino-pyridinium) tetra-iodido-cad-mate monohydrate

The title compound, (C₅H₇N₂)₂[CdI₄]·H₂O, contains one [CdI₄]²⁻ anion, two prontonated 4-amino­pyridine mol­ecules and one water mol­ecule in the asymmetric unit. In the anion, the Cd^II atom is coordinated by four I atoms in a slightly distorted tetra­hedral geometry. The [CdI₄]²⁻ anion and the water mol­ecule are bis­ected by a crystallographic mirror plane perpendicular to the c-axis direction, with the Cd^II atom, two of the I atoms and the atoms of the water mol­ecule located on this plane. The crystal packing is stabilized by inter­molecular N—H⋯I, N—H⋯O and O—H⋯I hydrogen bonds and by π–π stacking inter­actions [centroid–centroid distance = 3.798 (3) Å) between pyridine rings, which build up a three-dimensional network.