One-dimensional coordination polymers of MnII, CuII, and ZnII supported by carboxylate-appended (2-Pyridyl)alkylamine ligands - structure and magnetism

Himanshu Arora, Francesc Lloret, Rabindranath Mukherjee

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

Four new complexes [MnIIL1OO)(H2O)] [ClO4]H2O (1), [ZnIIIL1OO)][ClO 4]H2O (2), [CuII(L3OO)][CF 3S03]-.H2O (3), and [Zn11JL 3OO)][ClO4] (4) (L1OO- = 3-[(2-(pyridine-2-yl) ethyl){2-(pyridine-2-yl)methyl}amino]propionate; L3OO- = 3[(2-(pyridine-2-yl)ethyl)((dimethylamino)ethyl}amino]propionate) have been synthesized and characterized by elemental analysis, IR, and UV/Vis spectroscopy. Structural analysis revealed that 1, 3, and 4 are one-dimensional chain-like coordination polymers. In 1 distorted octahedral MnN 3O3 and in 3 square-pyramidal CuN3O2 coordination is satisfied by three nitrogen atoms and an appended carboxylate oxygen atom, of the ligand, and. an oxygen atom, belonging to the carboxylate group of an adjacent molecule. In 4 trigonal bipyramidal ZnN3O 2 coordination environment is provided by two nitrogen atoms and an appended carboxylate oxygen, atom, of the Iigand in the equatorial plane, and. the two axial positions are satisfied by a tertiary amine nitrogen and an oxygen, atom. belonging to the carboxylate group of an adjacent molecule. In 1 the Mn11 center is coordinated by an additional water molecule. In these complexes each monomelic unit is sequentially connected by syn-anti carboxylate bridges. Temperature-dependent magnetic susceptibilities for 1 and 3 are measured, revealing antiferromagnetic interactions through syn-anti carboxylate bridges between the M11 centers. Analysis of the crystal packing diagram reveals that in 1 extensive Ti-Ji stacking involving alternate pyridine rings of adjacent ID chain exists, which eventually lead to the formation of a 2D network structure.

Original languageEnglish
Pages (from-to)3317-3325
Number of pages9
JournalEuropean Journal of Inorganic Chemistry
Issue number22
DOIs
StatePublished - Aug 2009
Externally publishedYes

Keywords

  • Antiferromagnetic coupling
  • Bridging ligands
  • Carboxylate ligands
  • Coordination polymers
  • Crystal structures
  • Magnetic properties
  • Noncovalent interactions
  • Structure elucidation

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