Two-dimensional and three-dimensional nickel(II) supramolecular complexes based on the new chelating ligand N-(4-carboxyphenyl)iminodiacetic acid: hydrothermal synthesis and crystal structures

Two new nickel (II) supramolecular complexes, [Ni(HCPIDA)(H2O)3] (1) and [Ni2(HCPIDA)2(bpy)(H2O)4]$(H2O)2 (2) (H3CPIDAZ N-(4-carboxyphenyl) iminodiacetic acid, bpyZ4,40-bipyridine) were synthesized through hydrothermal method. These supramolecular complexes have been structurally characterized by X-ray single crystal diffraction. The structure of 1 exhibits a new three-dimensional supramolecular framework with one-dimensional channels, formed by hydrogen bonding interactions. The structure of 2 shows a new twodimensional joint-ladder like architecture constructed by hydrogen bonding and p–p staking interactions. The compounds 1 and 2 contain the zigzag-shape and ladder-shape supramolecular chains, respectively, which further extend into the three-dimensional and twodimensional supramolecular network, respectively. q 2004 Elsevier B.V. All rights reserved