Z. Aloui

Synthesis and Physico-chemical studies of a new non-centrosymmetric organic-inorganic hybrid material: (2,3-(CH3)2C6H3NH3)4 BiBr6NO3.2H2O

AbstractOrganic-inorganic hybrid single crystals of [2,3-(CH3)2C6H3NH3]4BiBr6NO3.2H2O were obtained by slow evaporation at room temperature and characterized by X-ray diffraction, IR and solid state NMR. This compound crystallizes in orthorhombic non-centrosymmetric space group Pca21 with the following lattice parameters: a = 25.8217(1), b = 7.8909(2), c = 21.4328(3) Å, V = 4367.07(13) Å3 and Z = 4. The structure was refined to R = 0.057 for 7069 independent reflections. The crystal is built up of 2,3-dimethylanilinium cations, [BiBr6]3−, disordered [NO3] anions and water molecules. The crystal packing is governed by a three-dimensional network of O-H…O, N-H…O and N-H…Br hydrogen bonds and van der Waals interaction. The infrared spectrum has been interpreted on the basis of literature data. Solid state 13C CP-MAS-NMR spectrum is in agreement with the X-ray structure. Graphical AbstractOrganic-inorganic hybrid single crystal of [2,3-(CH3)2C6H3NH3]4BiBr6NO3. 2H2O crystallizes in orthorhombic, non-centrosymmetric space group Pca21. The crystal packing is governed by a three-dimensional network of O-H…O, N-H…O and N-H…Br hydrogen bonds and van der Waals interaction. The IR and solid state 13C CP-MAS-NMR spectra are in agreement with the X-ray structure.

Synthesis, crystal structure and Hirshfeld surface analysis of a polymeric bis­muthate(III) halide complex, (C6H6N3)2[BiCl5]·2H2O

The structure of this new halide-bridged polymer comprises polyanionic zigzag chains of formula [(BiCl5)2−]n running along the c-axis direction. The 1,2,3-benzotriazolium cations are linked between these polymer chains, via the water molecules, giving rise to left- and right-handed helical chains.