Synthesis, characterization, computational studies and biological activities of Co(II), Ni(II) and Cu(II) complexes of 2-Amino-1,3,4-thiadiazole derivatives

New Gd(I)/Cs(III) complexes of benzil‐based thiocarbohydrazone macrocyclic ligand: Chemical synthesis, characterization, and study their biological effectiveness as antibacterial, antioxidant, and antiviral additives for polyurethane surface coating

“…[ 20 ] Moreover, aqueous silver nitrate solution with our complexes in DMSO did not show any white precipitate of AgCl, which proves the presence of chloride anions inside the coordination sphere. [ 51 ]…”

“…[20] Moreover, aqueous silver nitrate solution with our complexes in DMSO did not show any white precipitate of AgCl, which proves the presence of chloride anions inside the coordination sphere. [51] 3.1.2 | CHNS elemental analysis CHNS elemental analysis of Gd(I) and Cs(III) complexes was performed for determining the actual ratio of carbon, hydrogen, nitrogen, sulfur, and metal elements. As listed in Table 1, % of CHNS/M fits well with the molecular formula and hence, those results validated the proposed chemical structures of the hit macrocyclic Gd(I) and Cs(III) coordinated compounds.…”

“…The solid mode IR spectra (Figure 3) of Gd(I) and Cs(III) complexes show weak vibrational broad bands about 3410 cm À1 that arise from O H stretching and meanwhile rocking peaks around 765 cm À1 , which confirms the presence of coordinated water molecules. [51,52] Also, IR data display absorption bands at 3322-3264 cm À1 that are earmarked to weak N H stretching groups, [23] which are not involved in the coordination mode. The existing bands at 3058-3021 cm À1 region can be specified to C H stretching vibration of the phenyl rings in benzil unit.…”

Synthesis, crystal structure and Hirshfeld surface analysis of bromidotetrakis[5-(prop-2-en-1-ylsulfanyl)-1,3,4-thiadiazol-2-amine-κN 3]copper(II) bromide

“…They generate complexes with elements whose ions possess partially vacant d-orbitals or occupied d-orbitals and a low positive charge, exhibiting various polyhedral structures. In this context, investigating the complex-forming properties of thiadiazole derivatives is pertinent in delineating the characteristics of the molecular and electronic structure of the original ligands and the stereochemistry of the coordination polyhedron (Hassan et al, 2018). This study focuses on the synthesis, examination of the structure, and characteristics of the [Cu(L)4Br]Br complex, where L is 2-amino-5-allylthio-1,3,4-thiadiazole (AAT), employing single-crystal X-ray diffraction (SC-XRD).…”