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Keywords:

  • Coordination polymer;
  • Imidazophenanthroline derivative;
  • Crystal structure;
  • Magnetic properties

Abstract

Two coordination polymers, [Co2(Hcpip)2(phth)]n·3n(H2O) (1) and [Mn2(Hcpip)2(phth)]n (2), {H2cpip = 2-(2-carboxyphenyl)imidazo[4,5-f](1,10)- phenanthroline, H2phth = phthalic acid}, were hydrothermally synthesized and characterized by elemental analysis, IR spectroscopy, and single-crystal X-ray diffraction. Complex 1 is a 1D chain, in which the dinuclear [Co2(Hcpip)2]2+ units are linked through (phth)2– anions. Complex 2 is a 2D layer structure, which is constructed from the 1D chains bridged by (phth)2– anions. The magnetic properties of 1 and 2 show that the weak ferromagnetic interactions occurred between CoII ions in 1 and a weak antiferromagnetic interactions exist between MnII ions in 2. These two complexes have good thermal stabilities.