Construction of Zn(II) Linear Trinuclear Secondary Building Units from A Coordination Polymer Based on α-Acetamidocinnamic Acid and 4-Phenylpyridine
Ejarque, Daniel (Universitat Autònoma de Barcelona. Departament de Química)
Calvet, Teresa (Universitat de Barcelona. Departament de Mineralogia, Petrologia i Geologia Aplicada)
Font-Bardia, Mercè (Universitat de Barcelona. Centres Científics i Tecnològics)
Pons Picart, Josefina (Universitat Autònoma de Barcelona. Departament de Química)

Date:	2020
Abstract:	The synthesis and characterization of one coordination polymer and two trinuclear complexes are presented. The coordination polymer [Zn2(µ-O,O'-ACA)2(ACA)2(4-Phpy)2]n (1) has been obtained by the reaction between Zn(OAc)2·2H2O, α-acetamidocinnamic acid (HACA), and 4-phenylpyridine (4-Phpy) using EtOH as solvent. Its recrystallization in CH3CN or EtOH yields two trinuclear complexes, both having pinwheel arrays with formulas [Zn3(µ-ACA)6(4-Phpy)2]·4CH3CN (2·4CH3CN) and [Zn3(µ-ACA)6(EtOH)2]·4EtOH (3·4EtOH), respectively. These trinuclear species, unavoidably lose their solvent co-crystallized molecules at RT yielding the complexes [Zn3(µ-ACA)6(4-Phpy)2] (2) and [Zn3(µ-ACA)6(EtOH)2] (3). In addition, compound 2 has also been obtained reacting Zn(OAc)2·2H2O, HACA, and 4-Phpy in a 1:2:2 ratio using CH3CN as solvent. Compounds 1-3 have been characterized by analytical and spectroscopic techniques. Furthermore, single crystals suitable for X-ray diffraction method for compounds 1, 2·4CH3CN, and 3·4EtOH were obtained and their supramolecular interactions have been studied and discussed, showing 2D supramolecular planes for the trinuclear complexes and a 3D supramolecular network for the coordination polymer. Finally, the supramolecular interactions of 2·4CH3CN and 3·4EtOH have been compared using Hirshfeld surface analysis and electrostatic potential calculations.
Grants:	Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1687
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Zn(II) ; A-acetamidocinnamic acid ; Coordination polymerTtrinuclear complexes ; Secondary building unit ; X-ray crystal structures ; Hirshfeld surface analysis ; Electrostatic surface potential
Published in:	Molecules, Vol. 25, Núm. 16 (August 2020) , art. 3615, ISSN 1420-3049

DOI: 10.3390/molecules25163615
PMID: 32784822

23 p, 5.6 MB

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