12.  Mannich Bases as Ligands: N,Ní-tetra(antipyryl-4-methyl)-1,2- diaminoethane as hexadentate ligand toward Cu(II)

Authors: Elena Maria Mosoarca, Ramona Tudose, Radostina Alexandrova, Otilia Costisor


Abstract:

The new mononuclear complex [Cu(TAMEN)](ClO4)2 were TAMEN = N,Ní-tetra(antipyryl-4-methyl)-1,2-diaminoethane was obtained and characterized by elemental analyses, electric conductivities, electronic and IR spectroscopy. The molar conductivities values of the copper(II) complex in DMF and DMSO solution demonstrate his behavior as 1:2 electrolytes type. Electronic spectra of the complex indicate the octahedral environment of the copper ion, whereas the infrared spectra for the complex support the coordination of TAMEN through the carbonylic oxygen atoms of the pyrazolone moiety and the amine nitrogen atoms of the 1,2- diaminoethane bridge.


Keywords: mononuclear complex, copper(II), antipyrine, Mannich base, ethylenediamine

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