Limits...
Crystal structure of bis-(9H-6-amino-purin-1-ium) hexa-fluorido-silicate(IV) dihydrate.

Belhouas R, Bouacida S, Boudaren C, Daran JC, Chtoun el H - Acta Crystallogr E Crystallogr Commun (2015)

Bottom Line: The asymmetric unit of the title compound, 2C5H6N5 (+)·SiF6 (2-)·2H2O, contains one adeninium cation, half of a hexa-fluorido-silicate anion located on an inversion centre and one lattice water mol-ecule.The overall connection of the cation leads to the formation of planar ribbons parallel to (122).In the ribbons, slipped π-π stacking inter-actions, with a centroid-to-centroid distance of 3.6938 (9) Å, an inter-planar distance of 3.455 Å and a slippage of 1.306 Å is observed.

View Article: PubMed Central - HTML - PubMed

Affiliation: Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale, CHEMS, Université Mentouri-Constantine, 25000, Algeria.

ABSTRACT
The asymmetric unit of the title compound, 2C5H6N5 (+)·SiF6 (2-)·2H2O, contains one adeninium cation, half of a hexa-fluorido-silicate anion located on an inversion centre and one lattice water mol-ecule. The adeninium cations are connected through N-H⋯N hydrogen bonds involving one H atom of the -NH2 group and the H atom of the protonated N atom of the adenine ring system, forming centrosymmetric ring motifs of the type R 2 (2)(10) and R 2 (2)(8), respectively. The overall connection of the cation leads to the formation of planar ribbons parallel to (122). In the ribbons, slipped π-π stacking inter-actions, with a centroid-to-centroid distance of 3.6938 (9) Å, an inter-planar distance of 3.455 Å and a slippage of 1.306 Å is observed. The hexa-fluorido-silicate anion and the water mol-ecule are linked through O-H⋯F hydrogen bonds [ring motif R 4 (4)(12)] into chains parallel to [100]. The cationic ribbons and anionic chains are finally connected through additional N-H⋯O, N-H⋯F and O-H⋯F hydrogen bonds into a three-dimensional network in which layers of adeninium cations and fluorido-silicate anions alternate parallel to (001).

No MeSH data available.


Partial packing view showing chains formed between water molecules and fluoridosilicate anions through O—H···F hydrogen bonds. For the sake of clarity, the cationic counterparts have been omitted. [Symmetry code: (i) x + 1, y, z]
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4384624&req=5

Fap3: Partial packing view showing chains formed between water molecules and fluoridosilicate anions through O—H···F hydrogen bonds. For the sake of clarity, the cationic counterparts have been omitted. [Symmetry code: (i) x + 1, y, z]


Crystal structure of bis-(9H-6-amino-purin-1-ium) hexa-fluorido-silicate(IV) dihydrate.

Belhouas R, Bouacida S, Boudaren C, Daran JC, Chtoun el H - Acta Crystallogr E Crystallogr Commun (2015)

Partial packing view showing chains formed between water molecules and fluoridosilicate anions through O—H···F hydrogen bonds. For the sake of clarity, the cationic counterparts have been omitted. [Symmetry code: (i) x + 1, y, z]
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4384624&req=5

Fap3: Partial packing view showing chains formed between water molecules and fluoridosilicate anions through O—H···F hydrogen bonds. For the sake of clarity, the cationic counterparts have been omitted. [Symmetry code: (i) x + 1, y, z]
Bottom Line: The asymmetric unit of the title compound, 2C5H6N5 (+)·SiF6 (2-)·2H2O, contains one adeninium cation, half of a hexa-fluorido-silicate anion located on an inversion centre and one lattice water mol-ecule.The overall connection of the cation leads to the formation of planar ribbons parallel to (122).In the ribbons, slipped π-π stacking inter-actions, with a centroid-to-centroid distance of 3.6938 (9) Å, an inter-planar distance of 3.455 Å and a slippage of 1.306 Å is observed.

View Article: PubMed Central - HTML - PubMed

Affiliation: Unité de Recherche de Chimie de l'Environnement et Moléculaire Structurale, CHEMS, Université Mentouri-Constantine, 25000, Algeria.

ABSTRACT
The asymmetric unit of the title compound, 2C5H6N5 (+)·SiF6 (2-)·2H2O, contains one adeninium cation, half of a hexa-fluorido-silicate anion located on an inversion centre and one lattice water mol-ecule. The adeninium cations are connected through N-H⋯N hydrogen bonds involving one H atom of the -NH2 group and the H atom of the protonated N atom of the adenine ring system, forming centrosymmetric ring motifs of the type R 2 (2)(10) and R 2 (2)(8), respectively. The overall connection of the cation leads to the formation of planar ribbons parallel to (122). In the ribbons, slipped π-π stacking inter-actions, with a centroid-to-centroid distance of 3.6938 (9) Å, an inter-planar distance of 3.455 Å and a slippage of 1.306 Å is observed. The hexa-fluorido-silicate anion and the water mol-ecule are linked through O-H⋯F hydrogen bonds [ring motif R 4 (4)(12)] into chains parallel to [100]. The cationic ribbons and anionic chains are finally connected through additional N-H⋯O, N-H⋯F and O-H⋯F hydrogen bonds into a three-dimensional network in which layers of adeninium cations and fluorido-silicate anions alternate parallel to (001).

No MeSH data available.