Synthesis, structural and corrosion inhibition studies on Mn(II), Cu(II) and Zn(II) complexes with a Schiff base derived from 2-hydroxypropiophenone

Homo‐ and Heteronuclear Compounds with a Symmetrical Bis‐hydrazone Ligand: Synthesis, Structural Studies, and Luminescent Properties

“…In all cases, this core is coplanar with the planar ligand binding pocket. This structural feature has been observed previously in aroylhydrazone complexes with M⋅⋅⋅M distances in a similar range (3.058–3.184 Å) 13b. 18 This unit is always composed of zinc atoms except in 2 ab* , in which the structural disorder in the central core was interpreted as a partial replacement of zinc atoms (using EADP Shelxl instructions19) from the initial [Zn 2 (H 2 L) 2 ] precursor by copper atoms to generate ((Cu/Zn) 2 O 2 ) units, whereas the two external pockets are exclusively occupied by copper atoms.…”

The crystal structure of (5-chloro-2-hydroxy-N-(4-methoxy-2-oxidobenzylidene)benzohydrazonato-κ3 N,O,O′)-(pyridine-κ1N)copper(II), C20H16ClCuN3O4

“…The Cu atom is in a slightly distorted square coordination environment, with two oxygen atoms and one nitrogen atom from the chelate ligand, one nitrogen atom from the pyridine molecule. The bond lengths of Cu1-O2, Cu1-O3, Cu1-N1 and Cu-N2 are 1.945, 1.909, 1.934 and 2.022 Å, respectively, which are as expected [15].…”

A Novel Schiff Base of 3-acetyl-4-hydroxy-6-methyl-(2H)pyran-2-one and 2,2'-(ethylenedioxy)diethylamine as Potential Corrosion Inhibitor for Mild Steel in Acidic Medium

“…The use of organic corrosion inhibitors has been identified as one of the most economical ways of reducing corrosion rate and protecting steel-made industrial facilities against corrosion [ 3 , 4 ]. The ability of Schiff base ligands to form stable complexes closely packed in the coordination sphere of metal ion introduces another class of compounds for corrosion inhibition [ 5 ]. Schiff bases are adsorbed on metal surfaces due to the presence of >C=N– groups [ 6 ].…”