A new Cu (II) complex with bidentate o-phenanthroline (phen) ligand, ([Cu(phen)](2)(H2PO4)(2)HPO4)(2)(H3PO4)(4), has been synthesized and characterized by single crystal X-ray diffraction, IR spectroscopy and magnetic data. The crystal structural analysis shows that the title compound contains two phosphate-bridged dimeric units ([Cu(phen)](2)(H2PO4)HPO4), which are crystallographically independent. In these units, each copper atom is five coordinated and the geometry around the Cu(II) can be described as slightly distorted square-based pyramidal, with tau parameter varying between 0.001 and 0.04. The crystal structure is stabilized by O-H...O and C-H....O hydrogen bonds between the dimeric units and the phosphoric acid molecules. In addition, the organic ligands are associated by pi-pi stacking interactions between neighboring non-nitrogen aromatic rings. The infrared spectrum recorded at room temperature was interpreted on the basis of data published in the literature. The magnetic susceptibilities data show a weak intra-dimer ferromagnetic interaction with J = 31.8 K.

Supramolecular structure, IR spectroscopic and magnetic studies of a novel copper (II) complex ([Cu(phen)]2(H2PO4)2HPO4)2(H3PO4)4

FERRETTI, Valeria;
2015

Abstract

A new Cu (II) complex with bidentate o-phenanthroline (phen) ligand, ([Cu(phen)](2)(H2PO4)(2)HPO4)(2)(H3PO4)(4), has been synthesized and characterized by single crystal X-ray diffraction, IR spectroscopy and magnetic data. The crystal structural analysis shows that the title compound contains two phosphate-bridged dimeric units ([Cu(phen)](2)(H2PO4)HPO4), which are crystallographically independent. In these units, each copper atom is five coordinated and the geometry around the Cu(II) can be described as slightly distorted square-based pyramidal, with tau parameter varying between 0.001 and 0.04. The crystal structure is stabilized by O-H...O and C-H....O hydrogen bonds between the dimeric units and the phosphoric acid molecules. In addition, the organic ligands are associated by pi-pi stacking interactions between neighboring non-nitrogen aromatic rings. The infrared spectrum recorded at room temperature was interpreted on the basis of data published in the literature. The magnetic susceptibilities data show a weak intra-dimer ferromagnetic interaction with J = 31.8 K.
2015
Ben Nasr, M.; Aubert, E.; Ferretti, Valeria; Espinosa, E.; Silva, P. S. P.; Pereira, L. C. J.; Silva, M. R.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2338552
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