| Titre : |
Synthèse, caractérisation et structures cristallines de complexes de métaux de transition de ligands diamine-(N2,O2) et dithioétherbis(phénolates) (S2,O2) d'intérêt pour la polymérisation radicalaire. |
| Type de document : |
texte imprimé |
| Auteurs : |
Yasmine Kheira Redjel, Auteur ; Meriem Benslimane, Directeur de thèse ; Christophe Fliedel, Directeur de thèse |
| Editeur : |
جامعة الإخوة منتوري قسنطينة |
| Année de publication : |
2019 |
| Importance : |
135 f. |
| Format : |
30 cm. |
| Note générale : |
Doctorat 3éme CYCLE
2 copies imprimées disponibles |
| Langues : |
Français (fre) |
| Catégories : |
Français - Anglais
Chimie
|
| Tags : |
Chimie:chimie inorganique Ligands tétradentés bis(phénolates) de type (O,E,E,O) (E = N, S) Métaux de transition Complexes acétylacétonato (acac) OMRP Diffraction des rayons X Tetradentate dianionic ligands of type (O,E,E,O) (E = N, S) Transition metals Acetylacetonato
(acac) complexes X-ray diffraction مخالب رباعية الروابط ) (O ,E,E,Oحيث ) (E = N, S المعادن الإنتقالية معقدات أستيل أستونات بروتكول OMRP الشعة السينية .RX |
| Index. décimale : |
540 Chimie et sciences connexes |
| Résumé : |
The main objective of this work was to synthesize original metal complexes of original tetradentate dianionic ligands of the type (O,E,E,O), with E = N or S with different steroelectronic properties and to examine the potential of these new complexes as radical initiators and control agents in organometallic-mediated radical polymerization (OMRP). The tetradentate dianionic scaffold of these ligands was shown to be a suitable environment for stabilizing transition metal complexes. Different coordination modes or ligand arrangements were observed depending on the nature of the donor atoms and stereoelectronic parameters of the ligands. A series of acetylacetonato complexes of cobalt(III) and iron(III) of tetradentate diamino-bis (phenolate) ligands was synthesized and characterized by mass spectrometry (ESI-MS), infrared spectroscopy (FT-IR), elemental analysis (EA) and nuclear magnetic resonance (NMR: 1H and 13C{1H}). The molecular structure of all the complexes was confirmed in the solid-state by X-ray diffraction. These complexes are thermally stable, even in the presence of vinyl monomers, and unfortunately the “metal-acac” entity was not able to produce radicals under the thermal conditions investigated in this study. Another series of diamino- or dithioether-bis(phenolate) tetradentate ligands-supported CoII, FeIII and CuII complexes were synthesized, isolated and characterized. The test of polymerization of vinyl acetate, using the CoII complex as moderator, revealed a pseudo first-order kinetic plot, but the evolution of the molar mass with respect to the conversion showed the process to be not wellcontrolled. |
| Note de contenu : |
Annexes. |
| Diplôme : |
Doctorat |
| En ligne : |
../theses/chimie/RED7493.pdf |
| Format de la ressource électronique : |
pdf |
| Permalink : |
index.php?lvl=notice_display&id=11325 |
Synthèse, caractérisation et structures cristallines de complexes de métaux de transition de ligands diamine-(N2,O2) et dithioétherbis(phénolates) (S2,O2) d'intérêt pour la polymérisation radicalaire. [texte imprimé] / Yasmine Kheira Redjel, Auteur ; Meriem Benslimane, Directeur de thèse ; Christophe Fliedel, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2019 . - 135 f. ; 30 cm. Doctorat 3éme CYCLE
2 copies imprimées disponibles Langues : Français ( fre)
| Catégories : |
Français - Anglais
Chimie
|
| Tags : |
Chimie:chimie inorganique Ligands tétradentés bis(phénolates) de type (O,E,E,O) (E = N, S) Métaux de transition Complexes acétylacétonato (acac) OMRP Diffraction des rayons X Tetradentate dianionic ligands of type (O,E,E,O) (E = N, S) Transition metals Acetylacetonato
(acac) complexes X-ray diffraction مخالب رباعية الروابط ) (O ,E,E,Oحيث ) (E = N, S المعادن الإنتقالية معقدات أستيل أستونات بروتكول OMRP الشعة السينية .RX |
| Index. décimale : |
540 Chimie et sciences connexes |
| Résumé : |
The main objective of this work was to synthesize original metal complexes of original tetradentate dianionic ligands of the type (O,E,E,O), with E = N or S with different steroelectronic properties and to examine the potential of these new complexes as radical initiators and control agents in organometallic-mediated radical polymerization (OMRP). The tetradentate dianionic scaffold of these ligands was shown to be a suitable environment for stabilizing transition metal complexes. Different coordination modes or ligand arrangements were observed depending on the nature of the donor atoms and stereoelectronic parameters of the ligands. A series of acetylacetonato complexes of cobalt(III) and iron(III) of tetradentate diamino-bis (phenolate) ligands was synthesized and characterized by mass spectrometry (ESI-MS), infrared spectroscopy (FT-IR), elemental analysis (EA) and nuclear magnetic resonance (NMR: 1H and 13C{1H}). The molecular structure of all the complexes was confirmed in the solid-state by X-ray diffraction. These complexes are thermally stable, even in the presence of vinyl monomers, and unfortunately the “metal-acac” entity was not able to produce radicals under the thermal conditions investigated in this study. Another series of diamino- or dithioether-bis(phenolate) tetradentate ligands-supported CoII, FeIII and CuII complexes were synthesized, isolated and characterized. The test of polymerization of vinyl acetate, using the CoII complex as moderator, revealed a pseudo first-order kinetic plot, but the evolution of the molar mass with respect to the conversion showed the process to be not wellcontrolled. |
| Note de contenu : |
Annexes. |
| Diplôme : |
Doctorat |
| En ligne : |
../theses/chimie/RED7493.pdf |
| Format de la ressource électronique : |
pdf |
| Permalink : |
index.php?lvl=notice_display&id=11325 |
|
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