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Academic literature on the topic 'Cuivre Cobalt Nickel Ligands Rayons X'
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Dissertations / Theses on the topic "Cuivre Cobalt Nickel Ligands Rayons X"
Hubert, Sandrine Gérard Christian Mohamadou Aminou. "Complexes de cuivre, nickel et cobalt avec des ligands polyazotés pentadentés linéaires et heptadentés tripodes amido-pyridiniques et pyraziniques: synthèses, études thermodynamiques et structurales." Reims : S.C.D. de l'Université, 2007. http://scdurca.univ-reims.fr/exl-doc/GED00000573.pdf.
Full textHubert, Sandrine. "Complexes de cuivre, nickel et cobalt avec des ligands polyazotés pentadentés linéaires et heptadentés tripodes amido-pyridiniques et pyraziniques: synthèses, études thermodynamiques et structurales." Reims, 2007. http://theses.univ-reims.fr/exl-doc/GED00000573.pdf.
Full textFour new linear or tripodal ligands providing pyridine-2-carboxamide or pyrazine-2-carboxamide moities were synthesized and the X ray crystal structures of the two tripodal ligands show that their crystal lattice is stabilized by intramolecular hydrogen bonds. Potentiometry and spectrophotometry studies, in aqueous solution allow the determination of the acidity constants of the ligands and the stability constants of the copper(II) and nickel(II) chelates. Only the two ligands providing pyridine-2-carboxamide moities allow the detection of [MLH]3+ and [ML]2+ species, indicating the more powerful coordinating ability of the pyridyl group than the pyrazyl group. The deprotonation of the amide groups of the ligands induce, in all the case, the formation of mononuclear [MLH-1]+, MLH-2 or [MLH-3]- species, whereas the tripodal ligand containing pyrazinamide groups allow the formation of dinuclear species [Cu2LH-2]2+, [Cu2LH-3]+ and [Cu2LH-4]. In solid state, different copper(II), nickel(II) and cobal(II) or cobalt(III) complexes with the protonated, neutral or deprotonated forms of the ligand have been prepared and characterized by spectroscopic techniques (IR, UV-Visible, EPR); only ligands containing picolinamide groups give complexes with protonated and deprotonated forms of the ligand. The crystal structure of three complexes investigated shows that, for some compounds, the environment of the metal ion for the species observed in aqueous solution could be different than those isolated in solid state
Soibinet, Mathieu. "Complexes du cuivre (II), nickel (II) et cobalt (III) avec des ligands bis macrocycliques dérivés du cyclam et du cyclen : Synthèse, études thermodynamique et structurale." Reims, 2002. http://www.theses.fr/2002REIMS023.
Full textJubert, Caroline. "Coordination du cobalt, nickel, cuivre et zinc avec des ligands hexadentes N6, N4O2 ou N4S2 possédant deux groupements pyridylmethyles ou picolinamides : synthèse, études thermodynamiques et structurales." Reims, 2001. http://www.theses.fr/2001REIMS019.
Full textNeubeck, Wolfgang. "Etude des propriétés magnétiques et électroniques des oxydes de métaux de transition MnO, CoO, NiO et CuO par diffraction magnétique de rayons X." Université Joseph Fourier (Grenoble), 2000. http://www.theses.fr/2000GRE10216.
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