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- Title
Synthesis and structural characterization of nickel(II) coordination complexes with mixed-ligand systems: exploring π−π stacking and hydrogen bonding in supramolecular assemblies.
- Authors
Hamid, Abdul Samad; Mirzaei, Masoud; Bazargan, Maryam; Mague, Joel T.; Gil, Diego M.; Frontera, Antonio
- Abstract
Two coordination complexes [Ni(Hpydco)2(bpy)] (1) and [Ni(pydco)(phen)(H2O)2]·4.5H2O 0.5CH3OH (2) have been synthesized using a mixed-ligand system including pyridine-2,5-dicarboxylic acid N-oxide (H2pydco) as an O-donor ligand and 2,2'-bipyridine (bpy) or 1,10-phenanthroline (phen) as a chelating N-donor ligand and NiCl2.6H2O as a source for Ni ions. The crystal structures of 1 and 2 form discrete complexes in which extensive π−π stacking interactions between aromatic rings of the N-donor ligands resulted in the formation of one dimensional (1D) chain-like structures. The chains are connected by hydrogen bonds to expand the structures into 2D-supramolecular networks. Hirshfeld surface analysis and Density Functional Theory (DFT) calculations were included to rationalize the relative strength of the π-stacking assemblies observed in both complexes.
- Subjects
HYDROGEN bonding; STACKING interactions; NICKEL; LIGANDS (Chemistry); ELECTRON donors; SURFACE analysis; COORDINATION polymers; SUPRAMOLECULAR polymers
- Publication
Journal of the Iranian Chemical Society, 2024, Vol 21, Issue 6, p1723
- ISSN
1735-207X
- Publication type
Article
- DOI
10.1007/s13738-024-03034-6