Cytotoxic oxidovanadium(IV) complexes of tridentate halogen‐substituted Schiff bases: First dinuclear V(IV) complexes with O → VIV = O → VIV = O core

Rudbari, Hadi Amiri; Saadati, Arezoo; Aryaeifar, Mahnaz; Correia, Isabel; Marques, Fernanda; Blacque, Olivier; Micale, Nicola

doi:10.1016/j.bmcl.2021.128285

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Rudbari, H. A., Saadati, A., Aryaeifar, M., Correia, I., Marques, F., Blacque, O., & Micale, N. (2021). Cytotoxic oxidovanadium(IV) complexes of tridentate halogen‐substituted Schiff bases: First dinuclear V(IV) complexes with O → VIV = O → VIV = O core. Bioorganic & Medicinal Chemistry Letters, 49, 128285. https://doi.org/10.1016/j.bmcl.2021.128285

Abstract

The reaction of potentially N,N,O-tridentate Schiff base ligands, Cl-LH, Br-LH, BrCl-LH and H-LH, with [VIVO (acac)2] in 2:1 ratio in methanol gave the corresponding mononuclear and dinuclear oxidovanadium(IV) complexes, VO(Cl-L)2 (1), VO(Br-L)2 (2), [(BrCl-L)2(H2O)V(mu-O)VO(BrCl-L)2] (3) and [(H-L)2(H2O)V(mu -O)VO(H-L)2] (4), in good yields. The ligands and complexes were fully characterized by elemental analysis and FT-IR spectroscopy. The ligands were also characterized by 1H NMR spectroscopy. The oxidation state of V(IV)O with d1