TY - JOUR
T1 - An intramolecular antiferromagnetically coupled pentanuclear homoleptic Mn(II) cluster
T2 - Synthesis, crystal structure, spectral and magnetic property
AU - Konar, Saugata
AU - Jana, Atanu
AU - Das, Kinsuk
AU - Dhara, Anamika
AU - Chatterjee, Sudipta
AU - Carrella, Luca M.
AU - Rentschler, Eva
AU - Kar, Susanta Kumar
PY - 2013
Y1 - 2013
N2 - 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](ClO 4)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.
AB - 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](ClO 4)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.
KW - Antiferromagnetic coupling
KW - Cluster
KW - Manganese
KW - Pyrazole derived ditopic ligand
UR - http://www.scopus.com/inward/record.url?scp=84874404200&partnerID=8YFLogxK
U2 - 10.1016/j.poly.2013.01.047
DO - 10.1016/j.poly.2013.01.047
M3 - Article
AN - SCOPUS:84874404200
SN - 0277-5387
VL - 53
SP - 235
EP - 239
JO - Polyhedron
JF - Polyhedron
ER -