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 (μ 3 -DMPhIDC) 2 (H 2 O) 6 ]·2H 2 O} n ( 1 ) and {[Mn 5 (μ 3 -DMPhIDC) 2 (μ 2 -HDMPhIDC) 2 (Phen) 5 ]·2CH 3 OH·3H 2 O} n ( 2 ) (H 3 DMPhIDC = 2-(3,4-dimethylphenyl)-1 H -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 Mn 2+ linkages. Antiferromagnetic coupling exists between the Co(II) ions or Mn(II) ions in 1 or 2, respectively.