ISSN: 1813-0410

Keywords : Schiff Base

Synthesis , characterization new ligand from secondary ammines type N2O2 and this complexes with some transitions ions

journal of kerbala university, Volume 11, Issue 1, Pages 33-50

The work included the synthesis and characterisation of the new Ligand from secondary ammines type (N2O2) with general formula[(C19H24N2O2)].Also the work covers the reaction of some metal ions with ligands complexes have general formula: [M (L)]Cl2 , M =[Fe+2, Co+2, Ni+2and Cu+2].All compounds have been characterised as needed by spectroscopic methods [FTIR,UV–Vis.], elemental analysis (C.H.N), m.p and molar conductivity measurements.The IR spectra of prepared complexes showed some charges in the band shape and density compared with those of the free ligand, new bands have been also observed which may indicate that thecoordination between the metal ions and ligand are exist.The C.H.N result shows the corresponding between the actual and calculated values.From the above data the proposed geometry around Cu+2 is square planner while (Fe+2,Co+2,Ni+2) ions with the ligand is tetrahedral.The supported studies by magnetic measurements the value of magnetic moments of Cu(II) complex shows diamagnetic properties, other complexes Fe(II), Co(II), Ni(II), show paramagnetic properties.The conductivity measurements showed that, All complexes are electrolyte with (1:2).

Synthesis, Characterization and Antimicrobial Activity of Schiff Base Complexes of Copper (II), Cobalt (II) and Nickel (II) Derived from 4,4' - Diamino Diphenyl Methane (DDM) and 4,4'-Diamino Diphenyl Ether (DDE) with salicylaldehyde

Amjed A. Ahmed

journal of kerbala university, Volume 6, Issue 4, Pages 256-271

Tetra dentate N2O2 type complexes of Cu (II), Co (II) and Ni (II) ions have been synthesized using the Schiff bases formed by the condensation of salicylaldehyde (2-hydroxy benzaldehyde) with two diamines, 4,4 - diamino diphenyl methane(DDM) to give Schiff base (L1) and 4,4'-diamino diphenyl ether (DDE) to give Schiff base (L2). Molar conductance , FTIR spectroscopy, UV- visible spectroscopy studies have been carried out to determine the structures of these complexes, from these data it is found that all the complexes posses general stereochemistry [M(L)]2.X,( L= Schiff base (L1 and L2) ; X=Cl4 when M= Cu (II), Co (II) and X=(CH3COO)2 when M= Ni (II), The ratio 2:2 ( M:L) complexes showed square planer geometry around Ni(II ), Co( II ) and Cu(II) ions. FTIR spectra showed that ligands (L1 and L2) is coordinated to the metal ions through imino nitrogen (–CH=N–) and phenolic (–OH) oxygen. The Molar conductance data reveal that all synthesized complexes are electrolyte. Another interesting results of this study is the fact that the molar conductance of Cu (II) complexes of Schiff base (L1 and L2) (L1Cu and L2Cu) are higher than those of Ni(II) and Co (II) complexes with the same ligand, ( L1Ni and L1Co) and ( L2Ni and L2Co) respectively. The Ligands (L1and L2) and their complexes were screened for antimicrobial activity by the well diffusion technique using DMSO as a solvent. The biological activity studies showed that all the prepared complexes are antimicrobially active and showed higher activity than free ligands, the complexes derived from ligand L2 gave higher activity than L1 complexes

Preparation and Characterization of Some Transition Metal Complexes with Schiff base of thiosemicarbazone

Methak. S. Mohammad

journal of kerbala university, Volume 5, Issue 3, Pages 276-281

Aseries of new metal chelates of Ni(II), Zn(II), Cd(II) and Hg(II) with Schiff base [ p-hydroxy acetophenone thiosemicarbazone]. The ligand was preparaed by condensation reaction between p- hydroxy acetophenone with thiosemicarbazide. The chelate complexes of Ni(II), Zn(II), Cd(II) and Hg(II) have been prepared and identified by elemental analysis, molar conductance measurement, magnetic susceptibility measurement at room temperature, infrared and electronic spectra.

Preparation and Characterization of Some Transition Metal Complexes with Schiff base ligand (DBAB)

Muna. A. Hadi

journal of kerbala university, Volume 5, Issue 2, Pages 52-57

Cu(II), Zn(II) and Cd(II) metal complexes of Schiff base(DBAB)derived from 2-amino benzoic acid and 4-(N,N-dimethyl amino) benzaldehyde have been synthesized and characterized by elemental analysis, IR and electronic spectra, inaddition of molar conductance and magnetic moment measurements. It has been found that the Schiff base ligand behaves as mono basic bidentate (N,O) ligand forming chelates with 1:2 (metal:ligand) stoichiometry. The conductivity data for all complexes are consistent with those expected for an electrolyte.

Preparation, Study and Theortical Treatment of Co(II) Ni(II) Cu(II) and Zn(II) Schiff Base Coplexes with Sodium [N-(salicylidine) L-alanine imino]

journal of kerbala university, Volume 1, Issue 0, Pages 128-136

Anew Schiff base (NaHL) has been prepared from the reaction between the salt of amino acid Alanine with Salicylaldehyde. By tridentate Schiff base of (ONO), donors were characterized by using U.V and spectrophotometer techniques.
Complexes of Co(II) Ni(II) Cu(II) and Zn(II) ion with the ligand have been prepared, these complexes were identified by infrared, electronic spectral data, elemental analysis, magnetic moments, and molar conductivity measurements. It is concluded from the elemental analysis that all the complexes have (1:2) [metal:ligand] molar ratios, octahedral, with the exception to Zn(II) complex which have (1:1)[metal:ligand] molar ratio