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- Title
Synthesis, structural and electrochemical properties of a new family of amino-acid-based coordination complexes.
- Authors
Rey, Juan Manuel; Movilla, Federico; Angel Suárez, Sebastián; Di Salvo, Florencia
- Abstract
Metalloproteins involved in oxidation-reduction processes in metabolism are fundamental for the wellbeing of every organism. The use of amino-acid-based compounds as ligands for the construction of biomimetic coordination systems represents a promising alternative for the development of new catalysts. Herein is presented a new family of copper, zinc and nickel coordination compounds, which show four-, five- and six- coordination geometries, synthesized using Schiff base ligands obtained from the amino acids l-alanine and l-phenylalanine. Structural analysis and property studies were performed using singlecrystal X-ray diffraction data, spectroscopic and electrochemical experiments and DFT calculations. The analysis of the molecular and supramolecular architectures showed that the non-covalent interactions developed in the systems, together with the identity of the metal and the amino acid backbone, are determinants for the formation of the complexes and the stabilization of the resultant geometries. The CuII complexes were tested as candidates for the electrochemical conversion reduction of nitrite to NO, finding that the fivecoordinate l-phenylalanine complex is the most suitable. Finally, some insights into the rational design of ligands for the construction of biomimetic complexes are suggested.
- Subjects
COORDINATION compounds; NICKEL compounds; ELECTROLYTIC reduction; SCHIFF bases; AMINO acids; NITRITES; ALANINE
- Publication
Acta Crystallographica Section B: Structural Science, Crystal Engineering & Materials, 2022, Vol 78, Issue 3, Part 1, p520
- ISSN
2052-5192
- Publication type
Article
- DOI
10.1107/S2052520622003912