Abstract
New copper(II) complexes, [Cu2L1L2] · ClO4 (I) and [Ni(L3)2] (II), where L1 is the monoanionic form of 2-[1-(2-emthylaminoethylimino)ethyl]phenol, L2 is the dianionic form of N,N′-ethylene-bis(2-hydroxyacetophenonylideneimine), L3 is the mono-anionic form of 2-(1-iminoethyl)phenol, were prepared and characterized using elemental analysis, FT-IR spectroscopy, and X-ray single-crystal diffraction. In complex I, the Cu(1) atom is coordinated by the NNO tridentate ligand L1 and the two phenolate O atoms of L2, forming a square pyramidal geometry. The Cu(2) atom in complex I is coordinated by the NNOO tetradenate ligand L2, forming a square planar geometry. The Ni atom in complex II is coordinated by two phenolate O and two imine N atoms from two ligands L3, forming a square planar geometry. In the crystal structure of I, the perchlorate anions are linked to the dinuclear copper(II) complex cations through intermolecular N-H...O hydrogen bonds. In the crystal structure of II, the mononuclear nickel complex molecules are linked through intermolecular N-H...O hydrogen bonds, forming a trimer.
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