Synthesis, Characterization and Theoretical Evaluation of the Transition Metal Complexes of 2, 6-Diacetylpyridine -Derived N5-Acyclic Ligands
Mahmmod Al-Jubori,
Omar Hamad Shehab AL-Obaidi
Issue:
Volume 1, Issue 2, June 2013
Pages:
14-20
Received:
11 May 2013
Published:
10 June 2013
Abstract: A series of transition elements complexes with [2, 6-diacetimino-pheylenediamine –[2, 2,diyl] pyridine ]of the general formula [MLCl]Cl, M= Zn(II), Cd(II), Hg(II) and [CrLCl]Cl2, respectively have been synthesized and fully characterized on the bases of C.H.N.M, elemental analysis, 13C NMR, UV- Visible and FTIR spectra, in addition the structure of complexes was characterized by magnetic moments and molar conductance in DMSO solution, and molar ratio of metal were also determined. The obtained data of spectra in conjugation with microelemental analyses suggested the octahedral symmetry for all the complexes since the molar ratio(M: L) is 1:1, and the newly ligand behaved as neutral pentadentate through four nitrogen atoms of NH2,C=N and pyridine ring on the basis of infrared spectroscopy and other analysis of molar conductance and magnetic moments for solid complexes. A theoretical treatment of the formation of complexes in the gas phase was studied, this was done using the HYPERCHEM-6 program for the Molecular mechanics and Semi-empirical calculations.
Abstract: A series of transition elements complexes with [2, 6-diacetimino-pheylenediamine –[2, 2,diyl] pyridine ]of the general formula [MLCl]Cl, M= Zn(II), Cd(II), Hg(II) and [CrLCl]Cl2, respectively have been synthesized and fully characterized on the bases of C.H.N.M, elemental analysis, 13C NMR, UV- Visible and FTIR spectra, in addition the structure of...
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Complex Formation Reactions of Scandium(III), Yttrium(III) and Lanthanum(III) Complexes with 8-Hydroxyquinoline
Issue:
Volume 1, Issue 2, June 2013
Pages:
21-25
Received:
16 May 2013
Published:
20 June 2013
Abstract: This study aims to investigate the nature and types of complexes formed in aqueous solution between 8-Hydroxyquinoline (HQ) and the ions of Sc+3, Y+3, and La+3. Potentiometric titration was used to follow the formation of complexes. The coordination compounds formed were studied through the determination of stability constants of these complexes in aqueous solution at 25,0 ± 0,1ºC and ionic strength of 0,1 M KNO3. The basicity of the ligand was also assessed by the determination of the dissociation constants of the ligand. All of the constants were determined by computer refinement of pH-volume data using the BEST computer program. Distribution diagrams for the species were drawn showing the concentrations of individual species as a function of pH by the SPE software program.
Abstract: This study aims to investigate the nature and types of complexes formed in aqueous solution between 8-Hydroxyquinoline (HQ) and the ions of Sc+3, Y+3, and La+3. Potentiometric titration was used to follow the formation of complexes. The coordination compounds formed were studied through the determination of stability constants of these complexes in...
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Effect of Oligomers on Structural and Functional State of Biomembranes
Zaytseva O.,
Viktor Zhukov,
Rezunenko Y.,
Telegin V,
Knigavko V.,
Risovanaya L.
Issue:
Volume 1, Issue 2, June 2013
Pages:
26-28
Received:
14 May 2013
Published:
30 June 2013
Abstract: The effect of a new group of oligomers on the structural and functional state of erythrocytes, lymphocytes, hepatocytes, splenocytes membranes of rats under subacute experiment conditions was investigated. It is established that the oligomers are able to alter the membrane physical-chemical properties and disrupt the structural and metabolic processes that underlie the formation of pathological states.
Abstract: The effect of a new group of oligomers on the structural and functional state of erythrocytes, lymphocytes, hepatocytes, splenocytes membranes of rats under subacute experiment conditions was investigated. It is established that the oligomers are able to alter the membrane physical-chemical properties and disrupt the structural and metabolic proces...
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