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Harchani A.,Laboratoire Of Materiaux Et Cristallochimie Lmc | Haddad A.,Laboratoire Of Materiaux Et Cristallochimie Lmc
Journal of Cluster Science | Year: 2015

The reaction of (NH4)6Mo7O24·2H2O and NH4VO3 with 3-aminbenzonitrile in aqueous solution (pH = 2) at room temperature furnishes a new β-octamolybdate [(C7H7N2)3(NH4)]2[Mo8O26]2·4H2O (1). The title compound crystallizes in triclinic system, space group P-1, a = 12.0940(4) Å, b = 13.9373(6) Å, c = 15.0625(3) Å, α = 80.479(8)°, β = 83.013(2)°, γ = 66.694(5)°, V = 2295.2(2) Å3, Z = 1, λ(Mo Kα) = 0.71073 Å. The refinement of the structure leads to a residual factor R = 0.0560 for 5010 reflections [I > 3σ(I)]. The structure of 1 consist of β-[Mo8O26]4− with (C7H7N2)+ and (NH4)+cations connected to the mineral parts by hydrogen bonds. © 2015, Springer Science+Business Media New York. Source


Harchani A.,Laboratoire Of Materiaux Et Cristallochimie Lmc | Haddad A.,Laboratoire Of Materiaux Et Cristallochimie Lmc
Journal of Cluster Science | Year: 2015

A new diphosphopentamolybdate (VI) [C7H7N2]2[H2P2Mo5O23]0.5·3.5H2O (1) has been synthesized and structurally characterized by single crystal X-ray diffraction, scanning electron microscopy, IR, thermal stability analysis, cyclic voltammetry analyzes and UV–Vis. The compound 1 crystallizes in the monoclinic, space group C2/c, a = 23.267 (3) Å, b = 16.759 (2) Å, c = 13.756 (3) Å, β = 110.57 (1)° , Z = 8. The crystal structure of 1 also contains the isolated polyanion units [H2P2Mo5O23]4− around the protonated 3-Aminbenzonitrile ions and lattice water. The hydrogen bond hold the components together into a three-dimensional network and make the crystal structure of the compound more stable. © 2015, Springer Science+Business Media New York. Source

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