Synthesis and characterization of new complexes of some divalent transition metals with 2-acetyl-pyridyl-isonicotinoylhydrazone

Synthesis, characterisation and thermal degradation behaviour of some coordination polymers by using TG–DTG and DTA techniques

“…The initial step of decomposition in TG curve was found to be in temperature range 35-165°C, 39-150°C and 24-150°C associated with T DTG peaks at 79°C, 96°C and 52°C for Co(II), Ni(II) and Cu(II) coordination polymers respectively, hence the low temperature range corresponding to this transformation indicates the presence of loss of lattice water and these values are further supported by elemental analysis, IR data. Releasing of adsorbed lattice water in coordination polymer was reported with good agreement [46][47][48].…”

Synthesis, characterization and antibacterial properties of some transition metal complexes of (1H-pyrrol-2-yl)-isonicotinoylhydrazone

“…Furthermore the electronic spectrum of the Co(II) complex exhibited two bands at 28571 cm -1 and 38462 cm -1 . The absorption bands observed at 26667 cm -1 and 28571 cm -1 are assignable to a combination of d-d bands and metal-ligand charge transfer (M→LCT) [34,35]. The electronic spectra measurements is indicative of octahedral geometry for the Cu(II) complex, a tetrahedral geometry for the Zn(II) complex and a square planar geometry for the Co(II) complex…”

Crystal structures of two nickel compounds comprising neutral NiIIhydrazone complexes and dicarboxylic acids

“…Metal complexes based on 2-acetylpyridine isonicotinoylhydrazone (HL) have attracted considerable attention for the construction of supramolecular materials (Servati Gargari et al, 2015;Valipour et al, 2016) and as functional complexes for applications in various biochemical fields (Ababei et al, 2012;. Moreover, the precursors of HLs and related hydrazone ligands have been used in the design of complexes stabilized by strong hydrogen bonds (Lemmerer et al, 2010;Grobelny et al, 2011;Aakerö y et al, 2012;Cherukuvada & Nangia, 2012;Aitipamula et al, 2009) and spin-crossover complexes (Hill et al, 2010;Zhang et al, 2010).…”