Abstract
Synthesis, characterization and physical properties of the dinuclear triple helical complexes [Mn 2(μ-L) 3] ( 1), [Fe 2(μ-L) 3] ( 2) and [Co 2(μ-L) 3] ( 3) with the tetradentate Schiff base (H 2L) derived from 1 mol equiv. of hydrazine and 2 mole equiv. of 2-hydroxy-1-naphthaldehyde are described. Triple helical molecular structures of 2 and 3 have been confirmed by X-ray crystallography. Magnetic susceptibility measurements reveal complex 3 is diamagnetic while a weak antiferromagnetic interaction is operative between the metal centres in both 1 and 2.
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