1. Halide copper(II) complexes of aromatic N-donor containing ligands: Structural, magnetic and reactivity studies.
- Author
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Aguirrechu-Comerón, A., Pasán, J., González-Platas, J., Ferrando-Soria, J., and Hernández-Molina, R.
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HALIDES , *COPPER , *METAL complexes , *CRYSTAL structure , *LIGANDS (Chemistry) , *OXIDATION , *X-ray diffraction , *INTERMOLECULAR interactions - Abstract
The preparation of four new copper(II) complexes with different N-donor ligands [CuBr(2-benzylpyridine)] ( 1), [CuBr(2-benzylpyridine)(2,2′-bipyridine)]·HO ( 2), [CuBr(3-methyl-2-phenylpiridine)] ( 3), [Cu(picolinate)]·KI ( 4) from copper(I) halides as starting material is described. During the preparation of compound 4 a ligand oxidation reaction took place to give the picolinate ligand starting from 2-(2-methylaminoethyl)pyridine. The complexes were characterized by elemental analyses, IR spectroscopy and crystallographic studies. Single crystal X-ray diffraction analysis of the complexes reveals their monomeric penta- and tetracoordinated nature. For all compounds, the copper(II) present a common square planar coordination except for compound 2 which is five coordinated in a quasi-square pyramidal configuration with τ of 0.29. The Cu-N distances for these compounds are in the range of 1.959(4)-2.041(3) Å, Cu-O distance was 1.961(3) Å and Cu-Br distances were in the range of 2.4052(4)-2.4381(6) Å for the square base configuration while for apical distance it was 2.6745(7) Å. Magnetic properties have been investigated for all compounds in the temperature range 2-300 K. Compound 1 shows weak antiferromagnetic intermolecular interaction. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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