Zinc and cobalt complexes based on tripodal ligands: synthesis, structure and reactivity toward lactide.

Mathieu J-L Tschan (1) , Jia Guo (1) , Sumesh K Raman (1) , Emilie Brulé (1, 2) , Thierry Roisnel (3) , Marie-Noelle Rager (4) , Rémi Legay (5) , Guillaume Durieux (1) , Baptiste Rigaud (5) , Christophe M Thomas (1)

1 IRCP - Institut de Recherche de Chimie Paris
2 UPMC - Université Pierre et Marie Curie - Paris 6
3 ISCR - Institut des Sciences Chimiques de Rennes
4 Chimie ParisTech, NMR Facility
5 LCMT - Laboratoire de chimie moléculaire et thioorganique

The coordination chemistry of a series of pro-ligands ([L¹]-[L⁶]) with cobalt and zinc derivatives has been studied. All complexes have been characterized by multinuclear NMR, elemental analysis, and by single-crystal X-ray diffraction studies. Polymerization of rac-lactide takes place at 130 °C in the presence of cobalt and zinc complexes to yield polymers under solvent free conditions with controlled molecular masses and narrow polydispersities.

Domains: Chemical Sciences; Inorganic chemistry

Mathieu J-L Tschan, Jia Guo, Sumesh K Raman, Emilie Brulé, Thierry Roisnel, et al.. Zinc and cobalt complexes based on tripodal ligands: synthesis, structure and reactivity toward lactide.. Dalton Transactions, 2014, 43 (11), pp.4550-64. ⟨10.1039/c3dt52629a⟩. ⟨hal-01016948⟩