The nature of the metal ions influenced formation of coordination polymers based on asymmetric semi-rigid 3-(4-carboxyphenoxy)phthalic acid with N-heterocyclic ligands

Abstract Three new coordination complexes, namely [Cd(HL)( μ -bpp)(H 2 O)] n ·(H 2 O) n ( 1 ), [Co(HL)( μ -bpp)] n ·(H 2 O) n ( 2 ), and [Ag 2 (L) 2/3 ( μ -bpp)] n ( 3 ) [H 3 L = 3-(4-carboxyphenoxy)phthalic acid and bpp = 1,3-bis(4-pyridyl)propane], have been successfully synthesized by using H 3 L and accessory bridging ligand. The predominant influence in 1 – 3 may be the nature of different metal ions, which result in the complexes assembling into supramolecular frameworks with different topological nets. Structural analysis reveals that the structure of 1 can be described as a 2D network with Point (Schalfli) symbol for net: {6 6 } topology. Complex 2 shows the similar 2D 4 4 grid-like layers by the intermolecular hydrogen bonds, whereas dinuclear Ag(I) clusters in 3 act as coordination nodes, forming a sandwich-like 2D structure. In addition, the magnetic behavior of 2 was also studied.