Abstract
Mononuclear and trinuclear nickel(II) and copper(II) complexes containing the N3O3-type ligand (H3L), obtained by condensation of 1,1,1-tris(aminomethyl)ethane and salicylaldehyde (1 : 3), were synthesized. Two mononuclear nickel(II) complex units ([Ni(HL)]) are aggregated due to hydrogen bonding between the phenol group of one unit and the phenolate group of the other to give a dimer with homochirality. The trinuclear nickel(II) complex. [Ni3L2] consists of three face-sharing octahedra. Three nickel(II) ions form a linear array. Two terminal nickel(II) ions are coordinated octahedrally by L. The central and two terminal nickel(II) ions are bridged by six phenolate oxygen atoms. In the mononuclear square-planar copper(II) complex, [Cu(HL)], one arm of the tripodal ligand is not coordinated to the metal. On the basis of the absorption spectra of the copper(II) complexes, the coordination geometry around each copper ion of the trinuclear complex is assigned to be square planar and copper ions will be bridged by L.
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More From: Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
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