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Two distorted octahedral copper(II) coordination compounds; [Cu(AMPp) 2 (OClO 3 ) 2 ] ( 1 ) and [Cu(AMP) 2 (OClO 3 ) 2 ] ( 2 ) (2-aminomethylpiperidine and 2-aminomethylpyridine) have been synthesized on a SP Sephadex C-25 cation exchanger resin for high purity. Their structures have been determined by single-crystal X-ray diffraction, fourier transform infrared spectroscopy, and also thermal analysis. In both structures, the metal center adopts an elongated octahedral geometry in which two chelating amine ligands occupy the square plane in a trans-position, and two perchlorate ligands occupy the axial sites. The thermal stability of both complexes is relatively high. However, the thermal stability of  2  with the aromatic ring was 12 °C higher, due to intermolecular hydrogen bonds, π⋯π, and π⋯O interactions.

inorganic and nano-metal chemistry

Synthesis, structural characterization, and thermal properties of octahedral diperchlorato complexes of copper(II) with the chelating 2-aminomethylpiperidine and 2-aminomethylpyridine ligands