Sebacato-bridged Cu(II) phen complexes: syntheses and crystal structures of (2)(infinity)[Cu-2(phen)(2)L-4/2](H2O)(6) and [(phen)(2)Cu(mu-L)Cu(phen)(2)](HL)(2)(H2L)(H2O)(4) (H2L = sebacic acid; phen = 1,10-phenanthroline)

摘要

Reactions of freshly-prepared Cu(OH)(2) with sebacic acid (H2L) and 1,10-phenanthroline (phen) in EtOH/H2O (1:1 v/v) and CH3OH2O (1:1 v/v) at pH 6.4 afforded two novel sebacato-bridged Cu(II) phen complexes (2)(infinity)[Cu-2(phen)(2)L-4/2](H2O)(6) (1) and [(phen)(2)Cu( mu-L)Cu(phen)(2)(HL)(2)(H2L)(H2O)(4) (2), respectively. Complex 1 consists of 2D (2)(infinity)[Cu-2(Phen)(2)L-4/2] layers and lattice H2O molecules. The Cu atoms are each square-pyramidally coordinated by two N atoms of one phen ligand and three O atoms of different sebacato ligands. Two adjacent square pyramids are edge-shared to form [Cu2N4O4] dimers, which are interlinked by 2 sebacato ligands to 2D layers with rhombus-like 52-membered rings. The resulting layers are assembled by interlayer pi - pi stacking interactions and hydrogen bonding interactions. Complex 2 comprises divalent [(Phen)(2)Cu(mu-L)Cu(phen)(2)] complex cations, hydrogensebacate anions, sebacic acid molecules and lattice H2O molecules. In the divalent complex cations, the Cu atoms are each octahedrally coordinated by four N atoms of two phen ligands and two O atoms of one bis-chelating scbacato ligand. The complex cations are assembled via pi-pi stacking interactions into positively charged 2D network. The hydrogenscbacate anions, sebacic acid molecules and H2O molecules build negatively charged 2D hydrogen-bonded networks. Both positively and negatively charged 2D networks are interwoven with each other to generate it novel supramolecular architecture. (C) 2002 Elsevier Science Ltd. All rights reserved. [References: 52]