Molecular, supramolecular structure and catalytic activity of transition metal complexes of phenoxy acetic acid derivatives

  • Pramanik A
  • Abbina S
  • Das G
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Six mononuclear complexes [M(L-1)(2)(H2O)(4)] (M = Co(II), 1a and M = Mn(II), 1b), [Cu(L-1)(2)(H2O)(2)] (1c) [Cu(L-1)(2)(H2O)(Py)(2)] (1d), [Cu(L-3)(H2O)Cl] center dot H2O (3a) and [Co(Sal)(H2O)(Py)(3)] center dot 2ClO(4) center dot H2O (3b) of phenoxyacetic acid derivatives and Schiff base were determined by single crystal X-ray diffraction. The Co(II) (1a) and Mn(II) (1b) complexes are isomorphous. X-ray crystal structural analyses reveal that these coordination complexes form polymeric structure via formation of different types of hydrogen bonding and K-stacking interactions in solid. Thermal analysis along with the powder X-ray diffraction data of these complexes shows the importance of the coordinated and/or crystal water molecules in stabilizing the MOF structure. Complexes 1a, 1e, 3a show marginal catalytic activity in the oxidation of olefins to epoxides in the presence of i-butyraldehyde and molecular oxygen. (C) 2007 Elsevier Ltd. All rights reserved.

Author-supplied keywords

  • catalytic activity
  • cobalt(ii)
  • coordination polymers
  • crystal engineering
  • crystal-structures
  • electronic-properties
  • epoxidation
  • hydrogen bonds
  • ligands
  • magnetic-properties
  • metal-organic framework
  • metallacycles
  • olefins
  • organic frameworks
  • reactivity
  • thermal analysis

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  • A Pramanik

  • S Abbina

  • G Das

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