English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

By a condensation of aliphatic amine containing adamantyl groups (amantadine, memantine, or 3-amino-1-adamantanol) and 5-fluorosalicylaldehyde, three new Schiff base ligands,  HL 1–3, were synthesized. One Schiff base, zinc(II) chloride, and NaOH were stirred in anhydrous methanol generating three new zinc(II) complexes, C 34 H 38 F 2 N 2 O 2 Zn ( 1 ), C 38 H 46 F 2 N 2 O 2 Zn ( 2 ), and C 34 H 38 F 2 N 2 O 4 Zn ( 3 ), respectively. These complexes were characterized by melting point, elemental analysis, infrared spectrum, ultraviolet–visible spectrum,  1 H NMR analysis, thermal analysis, and single-crystal X-ray diffraction analysis. Single-crystal X-ray diffraction analysis shows that  1  and  3  crystallize in the monoclinic system with space group  P21/c , but  2  crystallizes in the orthorhombic system with space group  Pbca . Each asymmetric unit in  1  is composed of one zinc(II) and two deprotonated ligands; each asymmetric unit in  2  is constituted of one zinc(II), two deprotonated ligands as well as one dichloromethane. Each asymmetric unit in  3  is made up of one zinc(II), two deprotonated ligands, one methanol, and one lattice water. The central zinc(II) in  1 – 3  is four-coordinate via two nitrogen atoms and two oxygen atoms from the corresponding Schiff base ligands, forming a distorted tetrahedral geometry. The antibacterial activities of the three Schiff base ligands and the corresponding complexes against two gram positive bacteria,  Staphylococcus aureus  and  Bacillus subtilis , and a gram negative bacteria,  Escherichia coli , were tested.

Synthesis, crystal structure and antibacterial activity of zinc(II) complexes with Schiff bases derived from 5-fluorosalicylaldehyde