Unusual coordination mode of 3-methoxysalicylaldehyde in mononuclear zinc(II) complexes with nitrogenous bases: Synthesis, structural characterization and theoretical studies
Authors:
- Despoina Anastasiadou,
- Ariadni Zianna,
- Maria Gdaniec,
- Michael P. Sigalas,
- Evdoxia Coutouli-Argyropoulou,
- Agnieszka Czapik,
- Maria Lalia-Kantouri
Abstract
The reaction of the new precursor compound [Zn(3-OCH3-salo)2(H2O)2] (1) with the nitrogenous bases enR afforded the Zn(II) compounds [Zn(3-OCH3-salo)2(enR)] (2-5), where 3-OCH3-salo is the anion of 3-methoxysalicylaldehyde (o-vanillin) and enR the neutral bipy, phen, neoc and dpamH ligands. The new compounds were characterized by physicochemical and spectral (FT-IR, UV-Vis, 1H NMR) data. The X-ray diffraction study of [Zn(3-OCH3-salo)2(bipy)]·CH3OH (2) and [Zn(3-OCH3-salo)2(dpamH)] (5) confirmed the coordination mode of the 3-OCH3-salo ligand to the zinc cation through the phenolate and methoxy oxygen atoms, as predicted from the spectroscopic data. The thermal stability of the compounds [Zn(3-OCH3-salo)2(enR)] was investigated by the simultaneous TG/DTG-DTA technique and compared with the precursor (1). The residue at 1000 °C was estimated from TG curves as a carbonaceous mixture of ZnO. The molecular structure, the alternate coordination mode of 3-OCH3-salo ligand, the isomerism and the energetics of the metal-ligand interactions for compounds 2 and 5 have been studied by means of density functional theory (DFT) calculations.
- Record ID
- UAM0fcadb7143724207a4e2c29f3626b7e3
- Author
- Journal series
- Polyhedron, ISSN 0277-5387
- Issue year
- 2015
- Vol
- 87
- Pages
- 275-285
- ASJC Classification
- ; ;
- DOI
- DOI:10.1016/j.poly.2014.11.030 Opening in a new tab
- Language
- (en) English
- Score (nominal)
- 30
- Score source
- journalList
- Score
- Publication indicators
- = 2; = 2; : 2015 = 0.793; : 2015 (2 years) = 2.108 - 2015 (5 years) =1.973
- Uniform Resource Identifier
- https://researchportal.amu.edu.pl/info/article/UAM0fcadb7143724207a4e2c29f3626b7e3/
- URN
urn:amu-prod:UAM0fcadb7143724207a4e2c29f3626b7e3
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or PerishOpening in a new tab system.