In:
Acta Crystallographica Section C Structural Chemistry, International Union of Crystallography (IUCr), Vol. 76, No. 8 ( 2020-08-01), p. 734-740
Abstract:
A novel stilbene-based salicylhydrazone compound {systematic name: ( E )-4,4′-(ethene-1,2-diyl)bis[( N ′ E )- N ′-(2-hydroxybenzylidene)benzohydrazide] dimethyl sulfoxide disolvate, C 30 H 24 N 4 O 4 ·2C 2 H 6 OS or L ·2DMSO} was synthesized and characterized by single-crystal X-ray diffraction, powder X-ray diffraction and luminescence spectroscopy. The title compound crystallizes in the monoclinic space group P 2 1 / c , with half a symmetry-independent L molecule and one dimethyl sulfoxide (DMSO) solvent molecule in the asymmetric unit. The L molecule adopts an almost planar structure, with a small dihedral angle between the planes of the stilbene and salicylhydrazone groups. There are multiple π–π stacking interactions between adjacent L molecules. The DMSO solvent molecules act as proton donors and acceptors, forming hydrogen bonds of various strengths with the L molecules. In addition, the geometry optimization of a single molecule of L and its luminescence properties either in solution, as a solvated solid or as a desolvated solid were studied. The compound shows an aggregation-induced emission (AIE) effect and exhibits switchable luminescence colouration in the solid state by the simple removal or re-addition of the DMSO solvent.
Type of Medium:
Online Resource
ISSN:
2053-2296
DOI:
10.1107/S2053229620008037
DOI:
10.1107/S2053229620008037/jx3056sup1.cif
DOI:
10.1107/S2053229620008037/jx3056Isup2.hkl
DOI:
10.1107/S2053229620008037/jx3056sup3.pdf
Language:
Unknown
Publisher:
International Union of Crystallography (IUCr)
Publication Date:
2020
detail.hit.zdb_id:
2025703-X