Syntheses and crystal structures of two new coordination polymers constructed from 2‐bromo‐1,4‐benzenedicarboxylate

To explore the possibility of obtaining the metal‐organic frameworks (MOFs) bearing the 2‐bromo‐1,4‐benzenedicarboxylate ligand, one new Mn(II) and one Co(II) coordination polymers, Mn(HL)₂(bipy)₂·2H₂O]·bipy ( 1 ) and Co(L)(bpe)] ( 2 ) (bipy=4,4′‐bipyridine; bpe=1,2‐bis(4‐pyridyl)ethene) were synthesized and characterized by elemental analysis and X‐ray diffraction analysis. Compounds 1 exhibits one‐dimensional coordination chains, which are further connected to form two dimensional supramolecular networks through hydrogen bonding interactions. Compound 2 presents a two‐fold interpenetrating two‐dimensional layer structure. The 2‐bromo‐1,4‐benzenedicarboxylate anion exhibits different coordination modes in the two complexes. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)