| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1335818 | Polyhedron | 2013 | 5 Pages |
A pyrazole based ditopic ligand 5(E)-5-methyl-N′-(pyridin-2-ylmethylene)-1H-pyrazole-3-carbohydrazide (PzOPyH), prepared by the reaction between 5-methylpyrazole-3-carbohydrazide and pyridine-2-carbaldehyde, reacts with Mn(ClO4)2·6H2O to form a self-assembled, antiferromagnetically coupled alkoxide bridged pentanuclear Mn(II) homoleptic cluster complex [Mn5(PzOPy)6](ClO4)4(1). The complex has a central Mn5(μ-O6) core involving six ligand molecules. This pentanuclear core has a trigonal bipyramidal arrangement of Mn(II) atoms, where, the axial metal centers (Mn2 and Mn_2) have a N3O3 chromophore and the equatorial centers (Mn1, Mn_1 and Mn3) have N4O2 chromophore with distorted octahedral arrangement around the metal centers. Intramolecular antiferromagnetic interaction between Mn(II) centers (J = −1.42, S = 5/2) is the signature of the molecule.
Graphical abstractSynthesis, crystal structure, spectral and magnetic behavior of a homoleptic pentanuclear Mn5 (II) cluster derived from a ditopic ligand (5(E)-5-methyl-N′-(pyridin-2-ylmethylene)-1H-pyrazole-3-carbohydrazide), PzOPyH.Figure optionsDownload full-size imageDownload as PowerPoint slide
