Bimetallic complexes, when used as catalysts for the synthesis of polyesters, show synergistic in... more Bimetallic complexes, when used as catalysts for the synthesis of polyesters, show synergistic interactions between zinc atoms, depending on the monomers.
An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
A synthetic strategy for the preparation of a new class of ligands is introduced. The bis(aldimin... more A synthetic strategy for the preparation of a new class of ligands is introduced. The bis(aldimine‐thioether‐phenolate) ligands bear two anionic oxygen donors from phenolate moieties, two neutral sulfur donors and two neutral nitrogen donors belonging, respectively, to thioether and aldimine functionalities. The so designed OSNNSO ligands show two coordinative pockets and thus should be able to host two metallic centers. Instead, the aldimine‐thioether‐phenolate OSN ligands are tridentate ligands which may form monometallic complexes. Two OSNNSO and one OSN ligands of this class, have been synthesized. Satisfyingly, by direct reaction of the ligands with one or two equivalents of the zinc precursor, the corresponding bimetallic Zn(II) complexes were prepared from the bis(aldimine‐thioether‐phenolate) ligands, while the monometallic zinc complex was prepared from the tridentate ligand. These zinc amido complexes act as single component catalysts in the reaction of CO2 with cyclohexen...
A mononuclear magnesium complex Mg(OCtBu2Ph)2(THF)2 catalyzes the active polymerization of cyclic... more A mononuclear magnesium complex Mg(OCtBu2Ph)2(THF)2 catalyzes the active polymerization of cyclic esters and alternating co-polymerization of epoxides with cyclic anhydrides.
Phenoxy-imine aluminum complexes, in combination with DMAP, produce efficient catalysts for the a... more Phenoxy-imine aluminum complexes, in combination with DMAP, produce efficient catalysts for the alternating copolymerization of epoxides and anhydrides. A zwitterionic species is formed in the initiation step.
Dalton transactions (Cambridge, England : 2003), Jan 7, 2018
A salen ligand and its derivatives salan and salalen, bearing the same substituents on the phenol... more A salen ligand and its derivatives salan and salalen, bearing the same substituents on the phenolate rings, have been synthesized and then used for the preparation of the corresponding Fe(iii) complexes. All complexes were characterized by MALDI ToF mass spectroscopy, Evans method, and UV-Vis and IR spectroscopy. Moreover, for the salalen-based iron complex, the X-ray structure was studied. A comparison of their behaviour in the catalysis of CO with benchmark epoxide substrates allowed us to individuate an order of reactivity of the different classes of complexes. A salen Fe(iii) complex was prepared with a longer bridge between the two nitrogen atoms of the ligand skeleton in order to evaluate the influence of the flexibility on the activity of the catalyst. Finally, the same complexes were tested as catalysts in the ring-opening polymerization of l-lactide and ε-caprolactone.
The salen complex catalyst (SAA) in combination with Bu4NBr as co‐catalyst shows high catalytic a... more The salen complex catalyst (SAA) in combination with Bu4NBr as co‐catalyst shows high catalytic activity in reactions of epoxides (I) and (IV) with carbon dioxide to give the corresponding carbonates.
Yttrium and aluminium complexes of two dithiodiolate ligands that feature different bridges were ... more Yttrium and aluminium complexes of two dithiodiolate ligands that feature different bridges were synthesized and characterized. The catalytic activities of the four complexes in the ring-opening polymerization of ε-caprolactone and rac-lactide have been investigated.
At the current rate of consumption of petroleum resources, they are predicted to be exhausted wit... more At the current rate of consumption of petroleum resources, they are predicted to be exhausted within the next century. For this reason, the development of new chemical processes using biorenewable resources is attracting an increasing interest... [edited by Author]
Bimetallic complexes, when used as catalysts for the synthesis of polyesters, show synergistic in... more Bimetallic complexes, when used as catalysts for the synthesis of polyesters, show synergistic interactions between zinc atoms, depending on the monomers.
An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
A synthetic strategy for the preparation of a new class of ligands is introduced. The bis(aldimin... more A synthetic strategy for the preparation of a new class of ligands is introduced. The bis(aldimine‐thioether‐phenolate) ligands bear two anionic oxygen donors from phenolate moieties, two neutral sulfur donors and two neutral nitrogen donors belonging, respectively, to thioether and aldimine functionalities. The so designed OSNNSO ligands show two coordinative pockets and thus should be able to host two metallic centers. Instead, the aldimine‐thioether‐phenolate OSN ligands are tridentate ligands which may form monometallic complexes. Two OSNNSO and one OSN ligands of this class, have been synthesized. Satisfyingly, by direct reaction of the ligands with one or two equivalents of the zinc precursor, the corresponding bimetallic Zn(II) complexes were prepared from the bis(aldimine‐thioether‐phenolate) ligands, while the monometallic zinc complex was prepared from the tridentate ligand. These zinc amido complexes act as single component catalysts in the reaction of CO2 with cyclohexen...
A mononuclear magnesium complex Mg(OCtBu2Ph)2(THF)2 catalyzes the active polymerization of cyclic... more A mononuclear magnesium complex Mg(OCtBu2Ph)2(THF)2 catalyzes the active polymerization of cyclic esters and alternating co-polymerization of epoxides with cyclic anhydrides.
Phenoxy-imine aluminum complexes, in combination with DMAP, produce efficient catalysts for the a... more Phenoxy-imine aluminum complexes, in combination with DMAP, produce efficient catalysts for the alternating copolymerization of epoxides and anhydrides. A zwitterionic species is formed in the initiation step.
Dalton transactions (Cambridge, England : 2003), Jan 7, 2018
A salen ligand and its derivatives salan and salalen, bearing the same substituents on the phenol... more A salen ligand and its derivatives salan and salalen, bearing the same substituents on the phenolate rings, have been synthesized and then used for the preparation of the corresponding Fe(iii) complexes. All complexes were characterized by MALDI ToF mass spectroscopy, Evans method, and UV-Vis and IR spectroscopy. Moreover, for the salalen-based iron complex, the X-ray structure was studied. A comparison of their behaviour in the catalysis of CO with benchmark epoxide substrates allowed us to individuate an order of reactivity of the different classes of complexes. A salen Fe(iii) complex was prepared with a longer bridge between the two nitrogen atoms of the ligand skeleton in order to evaluate the influence of the flexibility on the activity of the catalyst. Finally, the same complexes were tested as catalysts in the ring-opening polymerization of l-lactide and ε-caprolactone.
The salen complex catalyst (SAA) in combination with Bu4NBr as co‐catalyst shows high catalytic a... more The salen complex catalyst (SAA) in combination with Bu4NBr as co‐catalyst shows high catalytic activity in reactions of epoxides (I) and (IV) with carbon dioxide to give the corresponding carbonates.
Yttrium and aluminium complexes of two dithiodiolate ligands that feature different bridges were ... more Yttrium and aluminium complexes of two dithiodiolate ligands that feature different bridges were synthesized and characterized. The catalytic activities of the four complexes in the ring-opening polymerization of ε-caprolactone and rac-lactide have been investigated.
At the current rate of consumption of petroleum resources, they are predicted to be exhausted wit... more At the current rate of consumption of petroleum resources, they are predicted to be exhausted within the next century. For this reason, the development of new chemical processes using biorenewable resources is attracting an increasing interest... [edited by Author]
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