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

Abstract

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.