Supramolecular frameworks composed of Ru(II), Cu(II), Zn(II), Ni(II) and Fe(II) complexes having tridentate 4′-chloro-2,2′:6′,2″-terpyridine ligand and 1:1 or 1:2 ratios of metal and ligand

Syntheses, molecular and crystal structures of Ru(II), Cu(II) and Zn(II) 1:1 complexes and Ni(II) and Fe(II) 1:2 complexes of 4′-chloro-2,2′:6′,2″-terpyridine (L), formulated as trans-[Ru(L-κ3N,N′,N″)(DMSO-κS)Cl2]·2H2O (1), trans-[Cu(L-κ3N,N′,N″)(ClO4-κO)2(H2O-κO)] (2) and [Zn(L-κ3N,N′,N″)Cl2] (3), [Ni(L-κ3N,N′,N″)2]Cl2·3H2O (4), [Ni(L-κ3N,N′,N″)2](BF4)2 (5), and [Fe(L-κ3N,N′,N″)2]Cl2·4H2O (6) were described in this paper. Versatile interactions in supramolecular level including coordinative bonding, O–H⋯O, O–H⋯Cl, C–H⋯O and C–H⋯Cl hydrogen bonding, π–π stacking play essential roles in forming different frameworks of 1–6.