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Title: | Zn(II) and Cd(II) monomer, dimer and polymer compounds coordinated by benzoic acid and 4-acetylpyridine: Synthesis and crystal structures |
Author: | Moreno-Gomez, Laura Sánchez-Férez, Francisco Calvet Pallàs, Maria Teresa Font Bardia, Ma. Mercedes Pons, Josefina |
Keywords: | Cristal·lografia Estructura cristal·lina (Sòlids) Polímers Crystallography Layer structure (Solids) Polymers |
Issue Date: | 1-Jun-2020 |
Publisher: | Elsevier B.V. |
Abstract: | Reaction of MO (MO = Metal oxide, M = Zn(II) or Cd(II)) with benzoic acid (HBz) in H2O/MeOH mixture as solvent yields two benzoate compounds: [Zn(µ-Bz)2]n (1) and [Cd(Bz)2(H2O)3] (2). In addition, the reaction between M(MeCO2)2 (M = Zn(II) or Cd(II)) with HBz and 4-acetylpyridine (4-Acpy) in a 1:2:4 M ratio and in MeOH solution, leads to the formation of [Zn(µ-Bz)2(4-Acpy)]2 (3) and [Cd(µ-Bz)2(4-Acpy)2]2 (4). These four compounds have been fully characterized by analytical and spectroscopic techniques. Besides, their crystal structures have been elucidated revealing a 1D coordination polymer (1), a monomer (2), a paddle-wheel (3) and a dimer (4). In 1, the Zn(II) ion is four-coordinated in a tetrahedral geometry while in 3 is penta-coordinated in a square-pyramidal geometry. By contrast, compounds 2 and 4 exhibit seven-coordinated Cd(II) ions in a pentagonal-bipyramidal geometry. In these set of compounds, the benzoate ligand presents different coordination modes such as bidentate bridged (µ2-η1:η1) (1 and 3), chelate (µ1-η2) (2) and both bridged and chelate (µ2-η2:η1) (4). Besides, their extended structures have been analyzed. Finally, the UV–Vis and fluorescence spectra of all the compounds have been recorded as well as their quantum yields calculated. |
Note: | Versió postprint del document publicat a: https://doi.org/https://doi.org/10.1016/j.ica.2020.119561 |
It is part of: | Inorganica Chimica Acta, 2020, vol. 506 |
URI: | http://hdl.handle.net/2445/208846 |
Related resource: | https://doi.org/https://doi.org/10.1016/j.ica.2020.119561 |
ISSN: | 0020-1693 |
Appears in Collections: | Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada) |
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