Abstract
Reaction of a new chiral and optically active trinucleating 3 + 3 condensed hexaaza triphenolic Schiff base macrocycle H3L1I with transition metal ions (Zn, Cu, Ni, Co, Fe and Mn) in 1∶3 molar ratio in methanol under reflux conditions resulted in complexes. Analytical data reveal the formation of 2 + 2 condensed dinuclear macrocyclic Schiff base complexes, instead of the expected trinuclear macrocyclic complexes. X-Ray crystallographic studies on three of these complexes established their dinuclearity. On the other hand, reaction of I with metal ions (Zn, Cu, Fe and Mn) in 1∶3 molar ratio in methanol at room temperature for 2 h resulted in one-side condensed mononuclear acyclic complexes. This is confirmed by the crystal structure of the manganese complex. Second-order non-linear properties are discussed.
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