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Bouchouit M.,University Freres Montouri | Bouraiou A.,University Freres Montouri | Bouacida S.,University Freres Montouri | Bouacida S.,University of Oum El Bouaghi | And 3 more authors.
Acta Crystallographica Section E: Crystallographic Communications | Year: 2015

The asymmetric unit of the polymeric title compound, {(C21H19N2)[HgCl3]} n , comprises one-half of the cationic molecule, the other half being generated by application of twofold rotation symmetry, one Hg and two Cl atoms. The HgII atom, lying on a twofold rotation axis, exhibits a distorted triangular coordination environment and is surrounded by three Cl atoms with Hg - Cl distances in the range 2.359(2)-2.4754(13)Å. Two additional longer distances [Hg⋯Cl = 3.104(14)Å] lead to the formation of polymeric [HgCl1/1Cl4/2]- chains extending along [001]. The crystal packing can be described by cationic layers alternating parallel to (-110) with the anionic chains located between the layers. The packing is consolidated by π-π stacking interactions between the benzene rings of the central benzimidazole entities, with centroid-to-centroid distances of 3.643(3)Å.


Chebout O.,University Freres Montouri Constantine | Boudraa M.,University Freres Montouri Constantine | Bouacida S.,University Freres Montouri Constantine | Bouacida S.,University of Oum El Bouaghi | And 2 more authors.
Acta Crystallographica Section E: Crystallographic Communications | Year: 2016

The title compound, {(C7H6NS)2[Sb2Cl6O]}n, contains two benzothiazolidium cations and one tri-μ-chlorido-trichlorido-μ-oxido-diantimonate(III) anion. The structure of the inorganic cation may be described as as being built up from two polyhedra, i.e. a square-pyramidal SbCl4O and a distorted octahedral SbOCl5 unit, sharing a common face (comprising the O atom and two Cl atoms). The two benzothiazole cations are quasi-planar and subtend a dihedral angle of 19.93 (5)°. The crystal packing can be described by alternating (100) layers and [001] chains of the organic cations and inorganic anions connected through an extensive three-dimensional network of N-H.Cl, C-H.O and C-H.Cl hydrogen bonds. This is consolidated by slipped π-π stacking, with centroid-tocentroid distances between the benzothiazole rings of 3.7111 (18)-3.8452 (16) A ° . These interactions link the molecules within the layers and also link the layers together and reinforce the cohesion of the ionic structure.


PubMed | University freres Montouri Constantine, University Freres Montouri Constantine and University of Oum El Bouaghi
Type: Journal Article | Journal: Acta crystallographica. Section E, Crystallographic communications | Year: 2016

The asymmetric unit of the polymeric title compound, {(C21H19N2)[HgCl3]} n , comprises one-half of the cationic mol-ecule, the other half being generated by application of twofold rotation symmetry, one Hg and two Cl atoms. The Hg(II) atom, lying on a twofold rotation axis, exhibits a distorted triangular coordination environment and is surrounded by three Cl atoms with Hg-Cl distances in the range 2.359(2)-2.4754(13). Two additional longer distances [HgCl = 3.104(14)] lead to the formation of polymeric [HgCl1/1Cl4/2](-) chains extending along [001]. The crystal packing can be described by cationic layers alternating parallel to (-110) with the anionic chains located between the layers. The packing is consolidated by - stacking inter-actions between the benzene rings of the central benzimidazole entities, with centroid-to-centroid distances of 3.643(3).

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