Browsing by Author "Sotiropoulos, Jean-Marc"

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    New Aluminum Complexes with an Asymmetric Amidine–Imine Ligand: Synthesis, Characterization, and Application in Catalysis
    Gómez Zamorano, Fernando; Rojas Moraga, María José; Mallet-Ladeira, Sonia; Cabrera, Alan R.; Garo, Jordan; Sotiropoulos, Jean-Marc; Maerten, Eddy; Madec, David; Rojas, René S.
    In this work, a new asymmetric amidine–imine ligand, using 1,8-diaminonaphthalene as a rigid platform, was synthesized and characterized, and its ability to form complexes with aluminum(III) was investigated. Several aluminum complexes were synthesized and characterized in solution and in the solid state. The synthesis of a dihalogenated aluminum(III) complex (AlI2L) using a reducing agent revealed an atypical pathway, which was investigated using Density Functional Theory (DFT). The dimethylated aluminum complex AlMe2L and the dihalogenated aluminum complex AlI2L were evaluated as catalysts for the transformation of CO2 and epoxides into cyclic carbonates in the presence of Bu4NI as a co-catalyst or in a single-component system, respectively. AlMe2L/Bu4NI appeared to be the most efficient system under 1 bar of CO2 at 90 °C.
  • No Thumbnail Available
    Item
    Synthesis and structures of homoleptic germylenes and stannylenes with sulfonimidamide ligands
    (2023) Lentz, Nicolas; Sodreau, Alexandre; Acuna, Alejandra; Mallet-Ladeira, Sonia; Maerten, Eddy; Sotiropoulos, Jean-Marc; Rojas Guerrero, Rene Segundo; Madec, David
    An unusual series of germylenes and stannylenes with homoleptic symmetric and unsymmetric N-substituted sulfonimidamide ligands PhSO(NiPr)(NHiPr) 1 and PhSO(NMes)(NHiPr) 2 have been prepared by protonolysis reaction of Lappert's metallylenes [M(HMDS)(2)] (M = Ge or Sn) with two equivalents of the appropriate sulfonimidamide. The homoleptic germylenes [PhSO(NiPr)(2)](2)Ge 3 and [PhSO(NMes)(NiPr)](2)Ge 4, and stannylenes [PhSO(NiPr)(2)](2)Sn 5 and [PhSO(NMes)(NiPr)](2)Sn 6 were fully characterized by NMR spectroscopy and by X-ray diffraction analysis. DFT calculations have been performed to understand the electronic properties brought by the sulfonimidamide ligand.