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)(H 2 O)] n  · 0.5 n ( i -C 3 H 7 OH) ( 1 ), [Cu(dbsf)(4,4′-bpy) 0.5 ] n  ·  n H 2 O ( 2 ), [Cu(dbsf)(2,2′-bpy)(H 2 O)] 2  · ( n -C 3 H 7 OH) · 0.5H 2 O ( 3 ), [Cu(dbsf)(phen)(H 2 O)] 2  · 1.5H 2 O ( 4 ) and [Cu(dbsf)(2,2′-bpy)(H 2 O)] n  ·  n ( i -C 3 H 7 OH) ( 5 ) (H 2 dbsf = 4,4′-dicarboxybiphenyl sulfone, 4,4′-bpy = 4,4′-bipyridine, 2,2′-bpy = 2,2′-bipyridine, phen = 1,10-phenanthroline, i -C 3 H 7 OH = isopropanol, n -C 3 H 7 OH =  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 , dbsf 2− 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.