Self-assembly of two-dimensional coordination polymers from AgX (X = BF4−, ClO4−, NO3− and PF6−) and 2,6-dimethyl-3,5-dicyano-4-(6-methyl-2-pyridyl)-1,4-dihydropyridine

Abstract

Novel supramolecules of Ag(I) complexes of the type [Ag(2-ddph)][X] (2-ddph = 2,6-dimethyl-3,5-dicyano-4-(6-methyl-2-pyridyl)-1,4-dihydropyridine; X = BF₄⁻, 1, ClO₄⁻, 2, NO₃⁻, 3 and PF₆⁻, 4) have been prepared by self-assembly of AgX with 2,6-dimethyl-3,5-dicyano-4-(6-methyl-2-pyridyl)-1,4-dihydropyridine (2-ddph) in MeOH–H₂O. The elemental analyses and IR have been recorded and all the complexes have been structurally characterized by X-ray crystallography confirming that complexes 1–4 are two-dimensional coordination polymers. The anions BF₄⁻ and PF₆⁻ in complexes 1 and 4 are not coordinated to the Ag(I) atoms while the ClO₄⁻ and NO₃⁻ anions in 2 and 3 are coordinated to the metal centers through a monodentate oxygen atom. Complexes 1–3 show 2-D brick-wall structures, while complex 4 shows square grids.