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Co(II), Ni(II) and Cu(II) metal complexes with a N8 azamacrocyclic ligand |
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| Authors: | Jesús Ma Martínez-Snchez Rufina Bastida de la Calle Alejandro Macías Paulo Prez-Lourido Laura Valencia Matarranz |
| Institution: | aDepartamento de Química Inorgánica, Facultad de Química, Universidad de Santiago de Compostela, Avda. de las Ciencias s/n 15782, Santiago de Compostela, Spain bDepartamento de Química Inorgánica, Facultad de Química, Universidad de Vigo, 36310 Vigo, Pontevedra, Spain |
| Abstract: | Hydrated nitrate and perchlorate salts of the transitional metal ions Co2+, Ni2+ and Cu2+ have been used to investigate the coordination capability of the octaaza macrocycle L derived from 2,6-diformylpyridine and diethylenetriamine. The synthesis of the metal complexes was carried out in 1:1 and 2:1 metal:ligand molar ratios, but dinuclear complexes were obtained in all cases due to the size of the 24-membered ligand. The complexes have been characterized by elemental analysis, molar conductivity, mass spectrometry, IR spectroscopy, diffuse reflectance and magnetic measurements. The dinuclear nature of the compounds was confirmed by X-ray diffraction. The crystal structures of Ni2L(NO3)2](NO3)2, Cu2L(NO3)4] and Cu2L(ClO4)4], were determined. |
| Keywords: | Macrocyclic ligand X-ray crystal structures Metal complexes |
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