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The synthesis and characterization of one coordination polymer and two trinuclear complexes are presented. The coordination polymer [Zn 2 (µ-O,O'-ACA) 2 (ACA) 2 (4-Phpy) 2 ] n ( 1 ) has been obtained by the reaction between Zn(OAc) 2 ·2H 2 O, α-acetamidocinnamic acid (HACA), and 4-phenylpyridine (4-Phpy) using EtOH as solvent. Its recrystallization in CH 3 CN or EtOH yields two trinuclear complexes, both having pinwheel arrays with formulas [Zn 3 (µ-ACA) 6 (4-Phpy) 2 ]·4CH 3 CN ( 2 ·4CH 3 CN) and [Zn 3 (µ-ACA) 6 (EtOH) 2 ]·4EtOH ( 3 ·4EtOH), respectively. These trinuclear species, unavoidably lose their solvent co-crystallized molecules at RT yielding the complexes [Zn 3 (µ-ACA) 6 (4-Phpy) 2 ] ( 2 ) and [Zn 3 (µ-ACA) 6 (EtOH) 2 ] ( 3 ). In addition, compound 2 has also been obtained reacting Zn(OAc) 2 ·2H 2 O, HACA, and 4-Phpy in a 1:2:2 ratio using CH 3 CN 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 ·4CH 3 CN, 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 ·4CH 3 CN and 3 ·4EtOH have been compared using Hirshfeld surface analysis and electrostatic potential calculations.

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