Co(II)(L-proline)2(H2O)2 solid complex: Characterization, magnetic properties, and DFT computations. Preliminary studies of its use as oxygen scavenger in packaging films

摘要: A solid Co II complex with L-proline as ligand was synthesized and fully characterized using spectroscopic studies, magnetic data, DFT calculations. Dioxygen scavenging properties were investigated by UV/ Vis spectroscopy oxymetry techniques. The Co-proline system presented very interesting in matter of oxygen absorption capacity both solution incorporated a polymer matrix. 2008 Elsevier B.V. All rights reserved. Oxygen is responsible for the deterioration many products either directly or indirectly [1]. Therefore, order to preserve these products, often excluded. Foods, drugs, cosmetics are among area where most undesirable. Indeed, oxidation processes lead their spoilage. Modified atmosphere packaging (MAP) foods, developed about two decades ago, capable providing, some cases, partial this problem. In MAP, air replaced mixture gases whose composition differs from that (usually comprising different concentrations nitrogen, carbon dioxide reduced levels oxygen). For residual can be achieved regular MAP technologies too high maintaining desired quality achieving sought shelf-life. scavengers reducing concentration package low (<0.1%) [2]. Most commercially available contain agent, such ascorbic acid finely divided iron oxide [3], marketed form sachet. More recently, films have been well. Some structure, while others based on organic compounds