Nano-sized metal(II) hybrids of a tridentate Schiff's base ligand: Synthesis, spectroscopic, molecular modeling and biological studies

Publication date: Available online 7 April 2019Source: Journal of Molecular StructureAuthor(s): Asma A. Alothman, Zainab M. AlmarhoonAbstractThe Schiff's base ligand 1-((2-hydroxybenzylidene)amino)quinolin-2(1H)-one (HL) that formed by condensation reaction of 1-aminoquinolin-2(1H)-one and 2-hydroxybenzaldehyde has been synthesized and characterized using elemental analysis, (1H, 13C and 15N) NMR, mass, and FT-IR as well as UV–Vis spectra. The nano-sized divalent Mn, Co, Ni, Cu, Zn and Hg hybrids of the synthesized Schiff's base ligand was prepared and inspected by various spectroscopic and analytical techniques. Elemental and thermal (TG) analyses denoted the formation of the nano-sized Mn(II), Co(II), Ni(II), Cu(II), Zn(II) and Hg(II) hybrids in the molar ratio 1 L: 1 M. The FT-IR spectral studies confirmed the coordination of the ligand to the metal ions through the phenolic hydroxy oxygen, azomethine nitrogen and carbonyl oxygen. The Schiff's base ligand acts as monobasic tridentate OON donor. The geometrical structures have been found to be octahedral and tetrahedral. The molar conductance measurements of the nano-sized hybrids in DMF and DMSO correspond to be nonelectrolytic nature for all nano-sized metal (II) hybrids. Thus these hybrids may be formulated as [MLCl(H2O)2]nH2O and [HgLCl]3H2O (M = Mn(II); n = 4, Co(II); n = 2, Ni(II); n = 3, Cu(II); n = 2 and Zn(II); n = 2). Electrochemical behavior of nano-sized metal (II) hybrids were dete...
Source: Journal of Molecular Structure - Category: Molecular Biology Source Type: research