Informace o publikaci
Induction of Λ-helicity in a zinc complex with an alanine-appended aminopyridine ligand
| Autoři | |
|---|---|
| Rok publikování | 2021 |
| Druh | Článek v odborném periodiku |
| Časopis / Zdroj | Acta Crystallographica Section C: Structural Chemistry |
| Fakulta / Pracoviště MU | |
| Citace | |
| www | https://doi.org/10.1107/S2053229621006471 |
| Doi | http://dx.doi.org/10.1107/S2053229621006471 |
| Klíčová slova | alanine; aminopyridine; supra-molecular chirality; zinc complex; crystal structure; amino acid |
| Popis | The crystal structure of tris[dimethyl 5-({1-[(pyridin-2-yl-?N)carbamoyl-?O]ethyl}carbamoyl)benzene-1,3-dicarboxylate]zinc(II) dinitrate acetonitrile trisolvate, [Zn(C19H19N3O6)3](NO3)2·3CH3CN or [Zn(L)3](NO3)2·3CH3CN, (1), has been determined by single-crystal X-ray diffraction. The neutral ligand L coordinates to the Zn2+ cation in a bidentate fashion via the pyridine N atom and an amide O atom, forming a six-membered chelate ring. The ?-helical chirality of the Zn2+ coordination sphere is induced by pendant l-alanine residues through stacking interactions between the arene groups of two coordinated ligands, assisted by a hydrogen bond between amide groups bonded to the stacked arene rings. The third ligand is coordinated to the Zn2+ cation by the same six-membered chelate ring, but in the opposite direction with respect to the analogous chelate rings of the first two coordinated ligands. Besides ionic interactions between [ZnL 3]2+ complexes and NO3 - anions, several types of hydrogen bonds and intermolecular stacking interactions contribute to the stability of the solid-state phase. |