Two Unprecedented Transition-Metal-Organic Frameworks Showing One Dimensional-Hexagonal Channel Open Network and Two-Dimensional Sheet Structures

Two new metal organic frameworks, {[Co-3-(mu(3)-DMPhIDC)(2)(H2O)(6)]center dot 2H(2)O}(n) (1) and {[Mn-5(mu(3)-DMPhIDC)(2)-(mu(2)-HDMPhIDC)(2)(Phen)(5)]center dot 2CH(3) OH center dot 3H(2)O}(n) (2) (H3DMPhIDC = 2-(3,4-dimethylphenyl)-1H-imidazole-4,5-dicarboxylic acid, Phen = 1,10-phenanthroline), have been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction, elemental analyses, X-ray powder diffraction (XRPD), thermal analyses, and IR spectra. Polymer 1 is an enchanting three-dimensional network containing infinite one-dimensional-hexagonal channels and [Co-2(DMPhIDC)](6) cages, which have two interpenetrating nets topology. Polymer 2 exhibits a two-dimensional framework, which is composed of left- and right-handed helices pillared by Mn2+ linkages. Antiferromagnetic coupling exists between the Co(II) ions or Mn(II) ions in 1 or 2, respectively.