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Construction of Zn(II) Linear Trinuclear Secondary Building Units from A Coordination Polymer Based on ?-Acetamidocinnamic Acid and 4-Phenylpyridine.


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, ?-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.

SUBMITTER: Ejarque D 

PROVIDER: S-EPMC7463536 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature

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Construction of Zn(II) Linear Trinuclear Secondary Building Units from A Coordination Polymer Based on α-Acetamidocinnamic Acid and 4-Phenylpyridine.

Ejarque Daniel D   Calvet Teresa T   Font-Bardia Mercè M   Pons Josefina J  

Molecules (Basel, Switzerland) 20200809 16


The synthesis and characterization of one coordination polymer and two trinuclear complexes are presented. The coordination polymer [Zn<sub>2</sub>(µ-O,O'-ACA)<sub>2</sub>(ACA)<sub>2</sub>(4-Phpy)<sub>2</sub>]<sub>n</sub> (<b>1</b>) has been obtained by the reaction between Zn(OAc)<sub>2</sub>·2H<sub>2</sub>O, α-acetamidocinnamic acid (HACA), and 4-phenylpyridine (4-Phpy) using EtOH as solvent. Its recrystallization in CH<sub>3</sub>CN or EtOH yields two trinuclear complexes, both having pinwhee  ...[more]

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