Supramolecular architectures of metallomacrocyclic and coordination polymers with dicarboxylate and 4,4 '-bis(imidazol-1-ylmethyl)biphenyl ligands

摘要

Four dimeric and polymeric coordination compounds [Zn-2(bimb)(2)(pdc)(2)]center dot 6H(2)O (1), [Cd-2(bimb)(2)(tp)(2)]center dot H2O (2), [Cd(bimb)(ada)] (3) and [Co(bimb)(ada)] (4) (bimb, 4,4-bis(imidazol-1-ylmethyl)biphenyl; pdc, pyridine-2,6-dicarboxylate; tp, terephthalate and ada, adipate) have been synthesized under hydrothermal conditions. Complex I is a discrete dinuclear metallomacrocycle featuring a 34-membered ring, in which the flexible bimb ligand acts as syn-conformation. While complexes 2-4 are 3D network structures connected by bimb and dicarboxylate ligands, the bimb ligand displays anti-confromation. (c) 2006 Elsevier B.V. All rights reserved.