Naslov
Induction of Λ-helicity in a zinc com­plex with an alanine-appended amino­pyridine ligand

Autori
Perić, Berislav ; Zoran, Kokan ; Kirin, Srećko I.

Izvornik
Acta crystallographica. Section C, Structural chemistry (2053-2296) C77 (2021); 449-457

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
alanine ; aminopyridine ; supra­molecular chirality ; zinc com­plex ; crystal structure ; amino acid

Sažetak
The crystal structure of tris­[dimethyl 5-({; ; ; 1- [(pyridin-2-yl-κN)carbamoyl-κO]eth­yl}; ; ; carbamo­ yl)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 Λ-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 [ZnL3]2+ com­plexes and NO3− anions, several types of hydrogen bonds and inter­ molecular stacking inter­actions contribute to the stability of the solid-state phase.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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