Azobased iminopyridine ligands and their rhenium metal complexes: Syntheses, spectroscopic, trans-cis photoisomerization and theoretical studies

[Display omitted] •Two rhenium metal complexes have been prepared and structurally characterized.•Absorption spectra have been measured.•DFT calculations have been performed to support the experimental results.•Photoisomerization studies of the azo group in the ligands and in the metal complexes hav...

Full description

Saved in:
Bibliographic Details
Published in:Journal of photochemistry and photobiology. A, Chemistry. Chemistry., 2019-01, Vol.368, p.78-84
Main Authors: Benmensour, Mohamed Ali, Ayadi, Awatef, Akdas-Kilig, Huriye, Boucekkine, Abdou, Fillaut, Jean-Luc, El-Ghayoury, Abdelkrim
Format: Article
Language:English
Subjects:
Absorption spectra
Adsorption
Aniline
Azobenzene
Biosynthesis
Chemical reactions
Chemical Sciences
Coordination compounds
Crystal structure
DFT
Iminopyridine
Ligands
Light effects
Metal complexes
Metal ions
Rhenium
Rhenium complex
Single crystals
UV–vis spectroscopy
X-ray diffraction
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] •Two rhenium metal complexes have been prepared and structurally characterized.•Absorption spectra have been measured.•DFT calculations have been performed to support the experimental results.•Photoisomerization studies of the azo group in the ligands and in the metal complexes have been performed. The reaction of rhenium(I) pentacarbonyl chloride Re(CO)5Cl with N,N-dimethyl-4-((E)-(pyridin-2-ylmethylene) amino)phenyl) diazenyl) aniline L1 and (E)-4-((E)-(4-nitrophenyl)diazenyl)-N-(pyridin-2-ylmethylene) aniline L2 affords two rhenium metal complexes [ReL1(CO)3Cl] (ReL1) and [ReL2(CO)3Cl] (ReL2), respectively. These Re(I) complexes were characterized in detail, including their single crystal structures, absorption spectra and electronic structures using DFT calculations. Trans to cis photoisomerization of the free ligands and complexes was investigated experimentally and rationalized theoretically. Interestingly, light-induced photoisomerization of the azo fragment is observed for free ligand L1 while inhibition of this process is produced upon coordination to Re metal cation.
ISSN:1010-6030
1873-2666
DOI:10.1016/j.jphotochem.2018.09.023