Coordination Polymers Based on Phthalic Acid and Aminopyrazine Ligands: On the Importance of N⁻H···π Interactions.

ABSTRACT: Two new Co(II) and Cu(II) coordination polymers, {Co(HL₁)₂(μ-L₂)(H₂O)₂}n (1) and {[Cu(HL₁)₂(μ-L₂)H₂O]·H₂O}n (2) (H₂L₁ = Phthalic acid and L₂ = 2-aminopyrazine), have been synthesized by slow evaporation of solvent and characterized by IR spectroscopic, elemental, single-crystal X-ray diffraction and thermal analysis. X-ray results indicate that in both the polymers, phthalate acts as a monodentate ligand and the aminopyrazine ligand is responsible for the formation of the infinite one-dimensional chain structure. The solid-state structures are stabilized through hydrogen bonds and N‒H···π interactions by generating two-dimensional layered structures. Finally, the non-covalent interactions have been studied energetically and using Bader's theory of atoms in molecules by means of Density Fun

SUBMITTER: Hossain A 

PROVIDER: S-EPMC6415139 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature