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1 2006

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Template Synthesis of 16-Membered Octaazamacrocyclic Complexes of Fe(II), Co(II), Ni(II), Cu(II) and Zn(II) Ions

Khan T., Ghani S., Tabassum S.

Polish Journal of Chemistry

2006

Vol. 80, nr 9

1449-1455

Template condensation of the metal ions with hydrazine, 2,4-pentanedione and acetaldehyde in a 1:4:2:2 molar ratio resulted in the formation of a new series of 16-membered octaazamacrocyclic complexes: dichloro/nitrato [2,5,8,10,13,16-hexamethyl-3,4,6,7,11, 12,14,15-octaazacyclohexadecane-2,7,10,15-tetraene)metal(II)], [MLX2] (M = Fe(II), Co(II), Ni(II), Cu(II) and Zn(II); X = Cl or NO3). The overall geometry and stereochemistry of the complexes have been characterized by elemental analyses, IR, 1HNMR, EPR, UVvisible, magnetic susceptibility and conductivity measurements. An octahedral geometry is suggested for all of the complexes. The conductivity data suggest that the complexes are non-ionic in nature.