Azametallacrowns with aza18-MC-6 and aza12-MC-4 motifs constructed by phenolicpyrazoles: Syntheses, structures, and magnetic properties

Two novel manganese complexes aza18-MC-6 and aza12-MC-4 were synthesized, through the new phenolic pyrazole (2-[5-Pyridin-2-yl-1-H-pyrazol-3-yl]-ph-enol, H2L) ligand. Magnetic studies show that aza18-MC-6 exhibits the domain ferromagnetic interactions while aza12-MC-4 displays antiferromagnetic interactions.258