Interpenetrating and non-interpenetrating 3-dimensional coordination polymer frameworks from multiple building blocks

摘要

Reaction of Co(NO_3)26H_2O with the multidentate ligands benzene-l,3,5-tricarboxylate (btc) and the flexible bipyridyl ligand 1.2 pyridyl)ethane (bpe) affords the 3-dimensional coordination polymers [Co3(btc)2(bpe)3(eg)2]-(guests) 1,where =ethylene glycol, and -[Co_2(Hbtc)_2(bpe)_2]-(bpe) 2. Both phases are comprised of infinite metal-carboxylate dimer chains, linked into 2-dimensional sheet by the bpe ligands .These sheets are further linked to adjacent sheets through covalent interactions, 1, or through hydrogen-bonding interactions, 2 to yield the 3-dimensional structures. Phase 1 exhibits solvent filled 1-dimensional pores, whereas 2 is triply-interpenetrated to form a dense solid array.