Journal
INORGANIC CHEMISTRY COMMUNICATIONS
Volume 145, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.inoche.2022.110059
Keywords
Complex; Pyridylamide; Helical ligand; Self -assembly; Crystal structure
Categories
Funding
- Guizhou Provincial Science and Technology Projects in China
- Development Project of Young Scientific and Technological Talents of Guizhou Province in China
- Student's Platform for Innovation and Entrepreneurship Training Program of Guizhou University
- [ZK[2022]059]
- [QJH-KY[2021]093]
- [[2021]008]
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Two helical pyridylamide ligands and their corresponding metal complexes were designed, synthesized, and structurally characterized. The study revealed the influence of the reaction ratio between the ligands and metal ions on the coordination configuration and chiral self-assembly process.
Two helical pyridylamide ligands N2,N6-bis(2-(nicotinamido)phenyl)pyridine-2,6-dicarboxamide (L1) and N2,N6bis(2-(isonicotinamido)phenyl)pyridine-2,6-dicarboxamide (L2) have been designed and synthesized. Four complexes, namely, {[Zn(L1)I2]center dot 2CH3OH center dot H2O}n (1), [Ag2(L1)2]center dot(NO3)2 (2), {[Ag(L2)NO3]center dot H2O}n (3), and {[Ag (L2)2]center dot 2H2O}n (4) were obtained via the solvent evaporation method from the reaction of the ligands with Zn(II) or Ag(I) ions respectively. The two ligands together with four complexes were structurally determined by singlecrystal X-ray diffraction and additionally characterized by infrared spectroscopy, element analysis and powder Xray diffraction. The crystal structures reveal different chiral self-assembly processes in the reaction of the helical liands with Zn(II) or Ag(I) ions. Complexes 1, 2 and 4 exhibit as a heterochiral coordination polymer or binuclear metallamacrocycle, while complex 3 exists as a homochiral coordination polymer. Besides, the structural differences between complexes 3 and 4 show that the reaction ratio of the ligand with metal ions has obvious influences on the coordination configuration. Furthermore, thermogravimetric analysis and methanol vapor adsorption properties of the synthesized complexes have been investigated, and cyclic voltammetric measurements of complexes 2-4 were carried out as well.
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