XAFS study of bioactive Cu(II) complexes of 7-hydroxycoumarin derivatives in organic solvents

M.T. Klepka (1) , A. Wolska (1) , A. Drzewiecka-Antonik (1) , P. Rejmak (1) , Keisuke Hatada (2, 3, 4) , G. Aquilanti (5)

1 IFPAN - Institute of Physics [Warsaw]
2 UNICAM - Università degli Studi di Camerino = University of Camerino
3 LNF - Laboratori Nazionali di Frascati
4 IPR - Institut de Physique de Rennes
5 Elettra Sincrotrone Trieste

We characterize the structure of two Cu(II) complexes of 7-hydroxycoumarins in organic solvents. The solvents are, dimethyl sulfoxide and dimethylformamide. X-ray absorption spectroscopy together with density functional theory calculations are employed to identify the structural changes induced by the two solvents in comparison to the solid form of complexes. We show that the structure of the Cu(II) complexes is modified depending on the solvent and we propose the geometry of the complexes molecule.

Domains: Chemical Sciences; Coordination chemistry; Chemical Sciences; Theoretical and/or physical chemistry

M.T. Klepka, A. Wolska, A. Drzewiecka-Antonik, P. Rejmak, Keisuke Hatada, et al.. XAFS study of bioactive Cu(II) complexes of 7-hydroxycoumarin derivatives in organic solvents. Chemical Physics Letters, 2017, 673, pp.113-117. ⟨10.1016/j.cplett.2017.02.025⟩. ⟨hal-01484633⟩