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 journalArticlepeer-review

34 Citations (Scopus)

Abstract

The mononuclear [CuII(HL)2] (1) and dinuclear [MnIII21,3-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.

Original languageEnglish
Pages (from-to)15-19
Number of pages5
JournalPolyhedron
Volume61
DOIs
Publication statusPublished - 2013
Externally publishedYes

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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