Abstract
A pair of novel isostructural azido-bridged polynuclear zinc(II) complexes, [Zn2(L1)2(μ1,1-N3)(μ1,3-N3)] n (1) and [Zn2(L2)2(μ1,1-N3)(μ1,3-N3)] n (2) (HL1 = 2-bromo-4-chloro-6-[(2-isopropylaminoethylimino)methyl]phenol, HL2 = 2,4-dibromo-6-[(2-isopropylaminoethylimino)methyl]phenol), have been synthesized and structurally characterized by elemental analysis, IR spectra and single crystal X-ray diffraction. Both complexes crystallize in the orthorhombic space group Pcca. Crystal data for (1): a = 22.567(4) A, b = 8.414(2) A, c = 17.268(3) A, V = 3279.0(11) A3, Z = 8, R 1 = 0.0441, and wR 2 = 0.0846. Crystal data for (2): a = 22.536(4) A, b = 8.409(2) A, c = 17.531(3) A, V = 3322.2(11) A3, Z = 8, R 1 = 0.0538, and wR 2 = 0.0906. X-ray structure determination revealed that each zinc(II) atom in the complexes is in a trigonal–bipyramidal coordination, with one imine N atom of a Schiff base ligand and two N atoms from two bridging azide ligands defining the basal plane, and one phenolate O and one amine N atoms of the Schiff base ligand occupying the two axial positions. A pair of novel isostructural azido-bridged polynuclear zinc(II) complexes have been synthesized and structurally characterized by elemental analysis, IR spectra and single crystal X-ray diffraction.
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