Reaction of Some Schiff Base Complexes of Iron(III) with Nitrogen and Sulfur Donor Anions

Esmadi, Fatima T.; Irshaidat, Tareq

doi:10.1080/00945710009351838

Cited by 10 publications

(6 citation statements)

References 21 publications

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“…In most cases,d-d transitions cannot be detected since they are possibly obscured by the broad charge transfer transitions tailing off into the visible region. We have observed similar trend in previous studies of Schiff base complexes [15,16,19] .…”

Section: Electronic Spectrasupporting

confidence: 92%

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Synthesis and Characterization of Some Transition Metal Complexes of Thiocarbohydrazone Schiff Bases

Esmadi

Khabour²,

Albarqawi³

et al. 2013

JJC

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Synthesis and Characterization of some thiocarbohydrazone Schiff bases and their complexes with Cu(II),Ni(II),Zn(II),Co(II) and Fe(II) are described. The Schiff bases were obtained by condensation of thiocarbohydrazide with a group of aldehydes in 1:2 molar ratios. The prepared Schiff basses are bis(pyrrole-2-carboxaldehyde)thiocarbo-hydrazone(Pytch),bis(thiophene-2carboxaldehyde)thiocarbohydrazone(Thtch),bis(furfuralthiocarbohydrazone(Futch) and bis(piperonaldehyde) thiocarbohydrazone(Pitch). The stoichiometry of the obtained complexes and the bonding modes of the ligands was found to depend on both nature of metal and ligand. The ligands (Pytch) and (Futch) produced tetracoordinate complexes of the general formual [MLCl 2 ] where they act as neutral bidentates bonding through the two imine nitrogens. However,in case of Pitch,the ligand is proposed to act as monobasic bidentate producing tetracoordinate complexes of the formual [M(Pitch) 2 ] with Co,and Ni whereas with copper it is proposed to act as tridentate forming a tetracoordinate complex of the formula,[Cu(Pitch)Cl]. Concerning the (Thtch) ligand,it is suggested to act either as neutral bidentate producing a tetracoordinate complex of the formula [Fe(Thtch)Cl 2 ] or as monobasic tridentate producing tetracoordinate [Zn(Thtch)Cl] complex or as monobasic bidentate forming tetracoordinate [M(Thtch) 2 ] complexes where M = Co,Ni and Cu. The antibacterial activity of the compounds against Acinetobacter sp gram negative and Staphylococcus gram positive strains was examined.

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Section: Electronic Spectrasupporting

confidence: 92%

“…[13,14] We have reported synthesis and characterization of a series of symmetrical and unsymmetrical Schiff bases and their transition metal complexes. [15][16][17][18] The biological activity of some of these complexes had been studied. [19] In continuation of…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Some Transition Metal Complexes of Thiocarbohydrazone Schiff Bases

Esmadi

Khabour²,

Albarqawi³

et al. 2013

JJC

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“…A number of symmetrical bimetallic transition metal complexes has been prepared using the bridging ligand, KS 2 CNC 4 H 8 NCS 2 K, 17 We have also shown that this double salt readily reacts with was prepared, which gave rise to a new phosphine resonance at 32.0 ppm in the 31 P NMR spectrum.…”

Section: Gold Complexesmentioning

confidence: 96%

Multimetallic Arrays: Bi-, Tri-, Tetra-, and Hexametallic Complexes Based on Gold(I) and Gold(III) and the Surface Functionalization of Gold Nanoparticles with Transition Metals

et al. 2009

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“…We have reported reaction of several Schiff bases with a variety of transition metal as Cu(II), Ni(II), Fe(II), Rh(III), Ir(III), Ru(II), Pt(II), Pd(II) and reaction of some of the prepared Schiff base complexes with different amines, where transamination reaction occurred (Esmadi & Irshaidat, 2000, 2001Esmadi et al, 2010). In addition, mixed Schiff base complexes (Mostafa, 2010), thiocarbohydrazone and semithiocarbazone.…”

Section: Introductionmentioning

confidence: 93%

Synthesis, characterization and biological activity of some unsymmetrical Schiff base transition metal complexes

Esmadi

Khabour

Abbas

et al. 2015

Drug and Chemical Toxicology

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In this study, several unsymmetrical Schiff bases and their cobalt and manganese complexes have been synthesized and characterized. The unsymmetrical Schiff bases were prepared from reaction of o-phenylendiamine derivatives with 1-hydroxy-2-acetonaphthone and then the product was reacted with the following aldehydes: salicyaldehyde, 2-hydroxynaphthaldehyde, 2-pyridinecarboxaldehyde and 2-qinolinecarboxaldehyde to produce the desired tetradentate unsymmetrical Schiff base ligands H2SL, H2NL, HPYL and HQN, respectively. Reaction of these ligands with cobalt and manganese salts produced complexes of the general formula [M(SL)], [(NL)], [M(PYL)] and [M(QL)]. All the complexes were characterized by elemental analysis, infrared spectroscopy, UV-visible spectroscopy, electrical conductivity and magnetic susceptibility measurements. The prepared complexes were examined for their anti-bacterial activity using gram-positive and gram-negative pathogens. The following complexes showed strong antibacterial activity against Staphylococcus aureus: MnSL1, MnSL2 and MnSL3. The genotoxic activity of four complexes, which are MnNL1, MnSL1, CoNL1 and CoSL1, were examined using 8-hydroxy-2-deoxy guanosine (8-OHdG) assay in cultured human blood lymphocytes. All examined complexes were found to be genotoxic at examined concentrations (0.1-100 µg/mL), but with variable magnitudes (p < 0.05). The levels of 8-OHdG induced by MnNL1 and MnSL1 were significantly higher than that induced by CoNL1 and CoSL1 ones. In general, the order of mutagenicity of the compounds is MnSL1 > MnNL1 > CoSL1 > CoNL1. In conclusion, some of the prepared complexes showed some biological activities that might be of interest for future research.

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Reaction of Some Schiff Base Complexes of Iron(III) with Nitrogen and Sulfur Donor Anions

Cited by 10 publications

References 21 publications

Synthesis and Characterization of Some Transition Metal Complexes of Thiocarbohydrazone Schiff Bases

Synthesis and Characterization of Some Transition Metal Complexes of Thiocarbohydrazone Schiff Bases

Multimetallic Arrays: Bi-, Tri-, Tetra-, and Hexametallic Complexes Based on Gold(I) and Gold(III) and the Surface Functionalization of Gold Nanoparticles with Transition Metals

Synthesis, characterization and biological activity of some unsymmetrical Schiff base transition metal complexes

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