TY - JOUR
T1 - Synthesis, crystallographic characterization and catecholase activity of a monocopper(II) and a dimanganese(III) complex with an anionic Schiff base ligand
AU - Mitra, Merry
AU - Maji, Ashis Kumar
AU - Ghosh, Barindra Kumar
AU - Kaur, Gurpreet
AU - Choudhury, Anghsuman Roy
AU - Lin, Chia Her
AU - Ribas, Joan
AU - Ghosh, Rajarshi
PY - 2013
Y1 - 2013
N2 - The mononuclear [CuII(HL)2] (1) and dinuclear [MnIII2(μ1,3-OAc)2L2] (2) [H2L = N-(2-hydroxypropyl)-3-methoxysalicylaldimine] compounds have been synthesized and characterized using microanalytical, spectroscopic and X-ray crystallographic results. Structural analysis reveals a bidentate chelation behavior of the monoanionic HL ligand, having a distorted square planar coordination environment around copper(II) with a CuN2O 2 chromophore. In compound 2, each manganese(III) center has a distorted octahedral geometry, with an MnN2O4 chromophore bridged by two acetate ligands in a μ1,3 fashion. Variable-temperature magnetic susceptibility measurements of 2 indicate an antiferromagnetic interaction between the two manganese(III) centers. Both 1 and 2 behave as effective catalysts towards the oxidation of 3,5-di-tert- butylcatechol to its corresponding quinone with molecular oxygen in methanolic solution.
AB - The mononuclear [CuII(HL)2] (1) and dinuclear [MnIII2(μ1,3-OAc)2L2] (2) [H2L = N-(2-hydroxypropyl)-3-methoxysalicylaldimine] compounds have been synthesized and characterized using microanalytical, spectroscopic and X-ray crystallographic results. Structural analysis reveals a bidentate chelation behavior of the monoanionic HL ligand, having a distorted square planar coordination environment around copper(II) with a CuN2O 2 chromophore. In compound 2, each manganese(III) center has a distorted octahedral geometry, with an MnN2O4 chromophore bridged by two acetate ligands in a μ1,3 fashion. Variable-temperature magnetic susceptibility measurements of 2 indicate an antiferromagnetic interaction between the two manganese(III) centers. Both 1 and 2 behave as effective catalysts towards the oxidation of 3,5-di-tert- butylcatechol to its corresponding quinone with molecular oxygen in methanolic solution.
KW - Catalytic activity
KW - Copper(II)/manganese(III)
KW - Crystal structure
KW - Magnetism
KW - Schiff base
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U2 - 10.1016/j.poly.2013.05.017
DO - 10.1016/j.poly.2013.05.017
M3 - Article
AN - SCOPUS:84884673812
SN - 0277-5387
VL - 61
SP - 15
EP - 19
JO - Polyhedron
JF - Polyhedron
ER -