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Manganese(II) one-dimensional coordination polymers with nitrobenzoato or nitrosalicylato bridges: Syntheses, crystal structures, and magnetic properties

Authors
Journal
Polyhedron
0277-5387
Publisher
Elsevier
Volume
79
Identifiers
DOI: 10.1016/j.poly.2014.05.005
Keywords
  • Manganese
  • Crystal Structures
  • Magnetic Properties
  • Epr Spectroscopy
  • Bridging Ligands
  • Coordination Polymer
Disciplines
  • Physics

Abstract

Abstract Five polymeric Mn(II) complexes with bridging carboxylato groups were prepared and structurally characterized. The bridging carboxylato ligand in double-chain coordination polymeric structures of [Mn(μ-3-NO2bz)2(bipy)]n·nH2O, [Mn(μ-3,5-(NO2)2bz)2(bipy)]n, [Mn(μ-5-(NO2)sal)2(bipy)]n, and [Mn(μ-5-(NO2)sal)2(phen)]n, where 3-NO2bz−=3-nitrobenzoate, 3,5-(NO2)2bz−=3,5-dinitrobenzoate, 5-(NO2)sal−=5-nitrosalicylate, bipy=2,2′-bipyridine and phen=1,10-phenanthroline, exhibits the syn-anti bidentate bridging mode. The Mn(II) atom in the coordination polymer [Mn(μ-4-NO2bz)(4-NO2bz)(phen)(H2O)]n, where 4-NO2bz=3-nitrobenzoate, is coordinated by terminal carboxylato groups in the syn monodentate mode but two Mn(II) atoms are connected with bridging 4-nitrobenzoate ligands in the anti-anti bidentate bridging mode. The magnetic susceptibility and magnetization data confirm that weak exchange interactions of an antiferromagnetic nature apply in these complexes.

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