Synthesis, characterization and X-ray crystal structures of two non-molecular coordination polymers of manganese(II) and copper(II) with N-(2-pyridylmethyl)-l-alanine and isothiocyanato ligands - Archive ouverte HAL Access content directly
Journal Articles Transition Metal Chemistry Year : 2016

Synthesis, characterization and X-ray crystal structures of two non-molecular coordination polymers of manganese(II) and copper(II) with N-(2-pyridylmethyl)-l-alanine and isothiocyanato ligands

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Sally-Judith Ntum
  • Function : Author
Bridget Ndosiri
  • Function : Author
Moise Agwara
  • Function : Author
James Raftery
  • Function : Author
Mohammad Malik
  • Function : Author
Peter Ndifon
  • Function : Author

Abstract

The reduced Schiff base, N-(2-pyridylmethyl)-l-alanine (Pyala), has been prepared and used as a ligand for the synthesis of two new non-centrosymmetrical isothiocyanate mixed-ligand coordination polymers, [MnPyalaSCN] n and [CuPyalaSCN] n . Pyala and the metal complexes were characterized by physico-chemical and spectroscopic methods. The single-crystal X-ray structures of the complexes reveal both compounds to be non-molecular coordination polymers which crystallize in the orthorhombic system. The ligand acts as a bridge between two metal centres in both compounds, forming two six-membered rings around each Mn atom and two five-membered rings around each Cu centre. The 1D chains are assembled via N–H⋯O, N–H⋯S hydrogen bonds and S–S interactions building 3D helical supramolecular networks in both compounds. Packing of the polymers of both compounds along the b-axis gives chiral channels.
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hal-01889374 , version 1 (06-10-2018)

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Sally-Judith Ntum, Bridget Ndosiri, Aminou Mohamadou, Jérôme Marrot, Moise Agwara, et al.. Synthesis, characterization and X-ray crystal structures of two non-molecular coordination polymers of manganese(II) and copper(II) with N-(2-pyridylmethyl)-l-alanine and isothiocyanato ligands. Transition Metal Chemistry, 2016, 41 (8), pp.889 - 896. ⟨10.1007/s11243-016-0091-y⟩. ⟨hal-01889374⟩
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