| Autor: |
Ghichi N; Unite of Research CHEMS, University of Constantine 1, Algeria., Bensouici C; The Centre of Research in Biotechnology, Constantine, Algeria., Benboudiaf A; Unite of Research CHEMS, University of Constantine 1, Algeria., DJebli Y; Laboratory of Material Chemistry, University of Constantine 1, Algeria., Merazig H; Unite of Research CHEMS, University of Constantine 1, Algeria. |
| Jazyk: |
angličtina |
| Zdroj: |
Acta crystallographica. Section E, Crystallographic communications [Acta Crystallogr E Crystallogr Commun] 2018 Mar 09; Vol. 74 (Pt 4), pp. 478-482. Date of Electronic Publication: 2018 Mar 09 (Print Publication: 2018). |
| DOI: |
10.1107/S2056989018003687 |
| Abstrakt: |
The title Schiff base compounds, C 20 H 16 ClNO 2 (I) and C 24 H 22 N 2 O 2 (II), were synthesized via the condensation reaction of 2-amino-4-chloro-phenol for (I), and 2-(2,3-di-hydro-1 H -indol-3-yl)ethan-1-amine for (II), with 4-benz-yloxy-2-hy-droxy-benzaldehyde. In both compounds, the configuration about the C=N imine bond is E . Neither mol-ecule is planar. In (I), the central benzene ring makes dihedral angles of 49.91 (12) and 53.52 (11)° with the outer phenyl and chloro-phenyl rings, respectively. In (II), the central benzene ring makes dihedral angles of 89.59 (9) and 72.27 (7)°, respectively, with the outer phenyl ring and the mean plane of the indole ring system (r.m.s. deviation = 0.011 Å). In both compounds there is an intra-molecular hydrogen bond forming an S (6) ring motif; an O-H⋯O hydrogen bond in (I), but a charge-assisted N + -H⋯O - hydrogen bond in (II). In the crystal of (I), mol-ecules are linked by C-H⋯π inter-actions, forming slabs parallel to plane (001). In the crystal of (II), mol-ecules are linked by pairs of N-H⋯O hydrogen bonds, forming inversion dimers. The dimers are linked by C-H⋯O hydrogen bonds, C-H⋯π inter-actions and a weak N-H⋯π inter-action, forming columns propagating along the a -axis direction. The anti-oxidant capacity of the synthesized compounds was determined by cupric reducing anti-oxidant capacity (CUPRAC) for compound (I) and by 2,2-picrylhydrazyl hydrate (DPPH) for compound (II). |
| Databáze: |
MEDLINE |
| Externí odkaz: |
|
