Assembly and structures of five new Cu(II) complexes based on the V-shaped building block [Cu(dbsf)]

Abstract: Five new copper(II) complexes [Cu(dbsf)(H2O)] n ·0.5n(i-C3H7OH) (1), [Cu(dbsf)(4,4′-bpy)0.5] n · nH2O (2), [Cu(dbsf)(2,2′-bpy)(H2O)]2 ·(n-C3H7OH)·0.5H2O (3), [Cu(dbsf)(phen)(H2O)]2 ·1.5H2O (4) and [Cu(dbsf)(2,2′-bpy)(H2O)] n · n(i-C3H7OH) (5) (H2dbsf=4,4′-dicarboxybiphenyl sulfone, 4,4′-bpy=4,4′-bipyridine, 2,2′-bpy=2,2′-bipyridine, phen=1,10-phenanthroline, i-C3H7OH=isopropanol, n-C3H7OH= n-propanol) have been synthesized under hydro/solvothermal conditions. All of the complexes are assembled from V-shaped building blocks, [Cu(dbsf)]. Complex 1 is composed of 1D double-chains. In complex 2, dbsf2− ligands and 4,4′-bpy ligands connect Cu(II) ions into catenane-like 2D layers. These catenane-like 2D layers stack in an ABAB fashion to form a 3D supramolecular network. Complexes 3 and 4 are 0D dimers, in which two [Cu(dbsf)] units encircle to form dimetal macrocyclic molecules. However, in complex 5, the V-shaped building blocks [Cu(dbsf)] are joined head-to-tail, resulting in the formation of infinite tooth-like chains. The different structures of complexes 3 and 5 may be attributed to the different solvent molecules included. [Copyright &y& Elsevier]