Synthesis, crystallographic characterization and catecholase activity of a monocopper(II) and a dimanganese(III) complex with an anionic Schiff base ligand

Merry Mitra; Ashis Kumar Maji; Barindra Kumar Ghosh; Gurpreet Kaur; Anghsuman Roy Choudhury; Chia Her Lin; Joan Ribas; Rajarshi Ghosh

doi:10.1016/j.poly.2013.05.017

Synthesis, crystallographic characterization and catecholase activity of a monocopper(II) and a dimanganese(III) complex with an anionic Schiff base ligand

Merry Mitra
, Ashis Kumar Maji
, Barindra Kumar Ghosh
, Gurpreet Kaur
, Anghsuman Roy Choudhury
, Chia Her Lin
, Joan Ribas^*
, Rajarshi Ghosh

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

44 Citations (Scopus)

Abstract

The mononuclear [Cu^II(HL)₂] (1) and dinuclear [Mn^III₂(μ_1,3-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 μ_1,3 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.

Original language	English
Pages (from-to)	15-19
Number of pages	5
Journal	Polyhedron
Volume	61
DOIs	https://doi.org/10.1016/j.poly.2013.05.017
Publication status	Published - 2013
Externally published	Yes

Keywords

Catalytic activity
Copper(II)/manganese(III)
Crystal structure
Magnetism
Schiff base

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/j.poly.2013.05.017

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@article{1f0d097320b94ff9a7eb22536e899fd1,

title = "Synthesis, crystallographic characterization and catecholase activity of a monocopper(II) and a dimanganese(III) complex with an anionic Schiff base ligand",

abstract = "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.",

keywords = "Catalytic activity, Copper(II)/manganese(III), Crystal structure, Magnetism, Schiff base",

author = "Merry Mitra and Maji, \{Ashis Kumar\} and Ghosh, \{Barindra Kumar\} and Gurpreet Kaur and Choudhury, \{Anghsuman Roy\} and Lin, \{Chia Her\} and Joan Ribas and Rajarshi Ghosh",

year = "2013",

doi = "10.1016/j.poly.2013.05.017",

language = "English",

volume = "61",

pages = "15--19",

journal = "Polyhedron",

issn = "0277-5387",

publisher = "Elsevier Limited",

}

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

UR - https://www.scopus.com/pages/publications/84884673812

UR - https://www.scopus.com/pages/publications/84884673812#tab=citedBy

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 -

Synthesis, crystallographic characterization and catecholase activity of a monocopper(II) and a dimanganese(III) complex with an anionic Schiff base ligand

Abstract

Keywords

ASJC Scopus subject areas

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