Low-temperature (100 K) crystal structures of pentaaqua(5-nitro salicylato) complexes of magnesium(II), zinc(II), cobalt(II) and nickel(II): A pi-pi stacked and hydrogen bonded 3D supramolecular architecture - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Polyhedron Année : 2006

Low-temperature (100 K) crystal structures of pentaaqua(5-nitro salicylato) complexes of magnesium(II), zinc(II), cobalt(II) and nickel(II): A pi-pi stacked and hydrogen bonded 3D supramolecular architecture

Résumé

Reactions of metal chloride or sulfate and the sodium salt of 5-nitrosalicylic acid (5-nsa) in aqueous solution result in isomorphous complexes of type [M(H2O)(5)(5-nsa)](+) (5-nsa)(-) center dot H2O [M = Mg (1), Zn (2), Co (3), Ni (4)] in the solid state. Structural analyses of these compounds reveal that the cationic moiety is a monomeric complex in which the metal is coordinated by five aqua ligands and one carboxylato O-atom from the 5-nitrosalicylato ligand, forming a slightly distorted octahedron. The crystal packing exhibits ionic parts assembled through extensive hydrogen bonding. The metal-bonded cationic moiety and the non-ligating anionic one are also engaged in pi-stacking interactions which contribute to the crystal cohesion. The anchoring of the individual ionic subunits through pi-pi stacking and hydrogen bonding results in a 3D supramolecular architecture.

Dates et versions

hal-00116315 , version 1 (25-11-2006)

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Georges Morgant, Nouzha Bouhmaida, Lamine Balde, Noureddine Ghermani, Jean d'Angelo. Low-temperature (100 K) crystal structures of pentaaqua(5-nitro salicylato) complexes of magnesium(II), zinc(II), cobalt(II) and nickel(II): A pi-pi stacked and hydrogen bonded 3D supramolecular architecture. Polyhedron, 2006, 25 (11), pp.2229-2235. ⟨10.1016/j.poly.2006.01.018⟩. ⟨hal-00116315⟩
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