Synthesis and characterization of highly conjugated 22-membered octaazamacrocycles and their manganese(II), copper(II), cobalt(II) and zinc(II) complexes
1090-1092A new series of 21-membered
macrocyclic complexes [MLX2] [M=Mn(II), Co(II), Ni(II), Cu(II) and
Zn(II); X=Cl or NO3] has been synthesized by template reaction of
phthalaldehyde with hydrazine hydrate and 2,4-pentanedione in methanol. The over-all
Geometry and stereochemistry of these complexes have been elucidated by IR, 1H
NMR, EPR, UV-vis, magnetic susceptibility and conductance values. An octahedral
geometry around the metal ion is suggested for all the complexes