Coordination polymer of copper with a silicon-containing Schiff base: Synthesis, structural characterization, and properties. (August 2015)

• Record Type: Journal Article
• Authors: Zaltariov, Mirela-Fernanda; Cazacu, Maria; Vlad, Angelica; Sacarescu, Liviu; Shova, Sergiu
• Other Names: Bruma Maria guest-editor.
• Is Part Of: High performance polymers. Volume 27:Number 5(2015:Aug.)
• Page Start: 607
• Page End: 615
• Publication Date: 2015-08
• Subjects: Coordination polymer -- Schiff base ligand -- silicon derivative -- supramolecular structure; Polymerization -- Periodicals; Polymers -- Periodicals; 547.7
• DOI: 10.1177/0954008315584176
• Languages: English
• ISSNs: 0954-0083

Abstract

A Schiff base was prepared by condensation reaction of 2, 6-diformyl-4-methylphenol with trimethylsilyl-methyl- p -aminobenzoate and it was further used, without isolation, as a ligand for copper (Cu(II)) ions. The structure of the resulting coordination complex was evidenced by spectral techniques (Fourier transform infrared spectroscopy, nuclear magnetic resonance and ultraviolet-visible spectroscopy) and by single crystal X-ray diffraction, which revealed a covalent one-dimensional (1D) structure where neutral molecular units (Cu(II) coordination polymer [CuL2 ]) are linked through the bridging oxygen atoms. The 1D polymeric chains are associated by intermolecular C–H···O hydrogen bonding to form two-dimensional supramolecular layers. The polymeric nature of the compound was also supported by the presence of glass transition in differential scanning calorimetry trace. This coordination polymer forms spherical aggregates in a nonpolar medium (hexane) as was emphasized by transmission electron microscopy image taken on the film remained after solvent evaporation. The thermogravimetrical analysis indicates a good stability for the Cu(II) coordination polymer and the biological tests revealed good antibacterial and antifungal activities.