Abstract Chalcogen bonding(ChB)is thenon-covalent interaction occurring between chalcogen atoms as Lewis acid sites and atoms or groups of atoms able to behave as Lewis bases through their lone pair or pelectrons.Analogously to its sister halogen bonding, the high directionality of this interaction was implemented for the precise structural organization in the solid state and in solution....[En savoir plus]
Abstract Chalcogen bonds (ChBs) occur between molecules containing Lewis acidic chalcogen substituents and Lewis bases. Recently, ChB emerged as a pivotal interaction in solution-based applications such as anion recognition, anion transport and catalysis. However, before moving to applications, the involvement of ChB must be established in solution. In this Concept article, we provide a brief...[En savoir plus]
Vendredi 20 octobre à 9h00 dans l’amphithéâtre du collège doctoral européen. Ces travaux de thèse portent sur des complexes de cuivre(II) à ligands redox non-innocents: trifluorométhylation de peptides et application comme sonde en RMN du fluor pour doser le Cu(II) en milieux biologiques. Ils ont été réalisés sous la direction du Pr. Marine Desage-El Murr, du Dr. Laurent Raibaut et du Pr. Peter...[En savoir plus]
Abstract The present study details the synthesis and characterization of novel Zn(II)-based organocations of the type [IPr*-Zn-R]+ (IPr* = 1,3-bis[2,6-bis(diphenylmethyl)-4-methylphenyl]-1,3-dihydro-2H-imidazol-2-ylidene; R = alkyl, aryl) and their use in styrene, alkyne, and carbonyl hydrosilylation catalysis. The neutral IPr* adducts [IPr*-ZnR2] (1, R = Me; 2, R = Et; 3, R = Ph) were prepared...[En savoir plus]
Abstract The weak intramolecular magnetic interactions within a series of CuII3 complexes based on the trinucleating 2,4,6-tris(di-2-pyridylamino)-1,3,5-triazine (dipyatriz) ligand were investigated via Electron Paramagnetic Resonance (EPR) spectroscopy. X- and Q-band EPR spectroscopy in powders and frozen solutions were recorded and the Q-band spectra were interpreted by a multispin Hamiltonian...[En savoir plus]
Abstract The chelator diacetyl-bis(N4-methylthiosemicarbazone) (ATSM) and its complexes with CuII and ZnII are becoming increasingly investigated for medical applications such as PET imaging for anti-tumour therapy and the treatment of amyotrophic lateral sclerosis. However, the solubility in water of both the ligand and the complexes presents certain limitations for in vitro studies. Moreover,...[En savoir plus]
Vendredi 29 septembre à 13h30 dans l’amphithéâtre du collège doctoral européen. Ces travaux qui portent sur la réactivité de N-allènamides activés : Synthèse de briques moléculaires azotées fluorées inédites ont été dirigés par le Dr. Laurence Miesch au sein de l'équipe SOPhy (UMR 7177). [En savoir plus]