Structure modulation of manganese coordination polymers consisting of 1,4-naphthalene dicarboxylate and 1,10-phenanthroline

Dalton Trans. 2014 Jun 14;43(22):8508-14. doi: 10.1039/c4dt00388h. Epub 2014 Apr 23.

Abstract

Three new manganese coordination polymers, {[Mn2(1,4-NDC)2(phen)2](H2O)}n (1), [Mn2(1,4-NDC)2(phen)(H2O)]n (2) and {[Mn4(1,4-NDC)4(phen)4](DMF)2}n (3) (1,4-H2NDC = 1,4-naphthalene dicarboxylic acid; phen = 1,10-phenanthroline; DMF = N,N-dimethylformamide), have been synthesized solvo/hydrothermally. 1,4-NDC(2-) ligands adopt different coordination modes under different solvents and concentrations which promotes different crystal structure formation. X-ray crystal structural data reveal that compounds 1, 2 and 3 crystallize in monoclinic space groups C2/c, P21/c and C2/c, respectively. Compound 1 has Mn2 dimers connected by 1,4-NDC(2-) linkers, packing into a 2D structure in a grid pattern. Compound 2 has a three-dimensional (3D) structure which is constructed by Mn2 dimers and 1,4-NDC(2-) linkers. Each MnO4N2 node of compound 3 is linked to another by 1,4-NDC(2-) ligands to form a two-dimensional (2D) structure. Variable-temperature magnetic susceptibilities of compounds 1-3 exhibit overall weak antiferromagnetic coupling between the adjacent Mn(II) ions.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Coordination Complexes / chemical synthesis*
  • Coordination Complexes / chemistry
  • Crystallography, X-Ray
  • Ligands
  • Magnetic Phenomena
  • Manganese / chemistry*
  • Models, Molecular
  • Molecular Structure
  • Naphthalenes / chemistry*
  • Phenanthrolines / chemistry*
  • Thermogravimetry

Substances

  • 1,4-naphthalenedicarboxylate
  • Coordination Complexes
  • Ligands
  • Naphthalenes
  • Phenanthrolines
  • Manganese
  • 1,10-phenanthroline