Electrochemical and Biological Studies on Reactivity of [VO(oda)(H₂O)₂], [Co(oda)(H₂O)₂]·H₂O, and [Ni(oda)­(H₂O)₃]·1.5H₂O Towards Superoxide Free Radicals

A journey into the electrochemistry of vanadium compounds

“…All oxido-V(IV) complexes showed a one-electron irreversible oxidation peak in DMSO solution near +0.60 V vs SCE (Table 1, entries [46][47][48][49].…”

“…The complex of VO 2+ with the tri-anion of cis-inositol (ino) was reported to form slowly from the corresponding non-oxido V(IV) species (see Section 2.2) in alkaline solution [47]. In 2013 the reactivity of VO 2+ complex with oxydiacetate (oda) as scavenger of superoxide radical was electrochemically investigated [48] (see Section 7).…”

“…VO 3+ derivatives were prepared with the N-benzoylhydrazones already discussed for VO 2+ complexes, in the presence of the anion of 8-hydroxyquinoline [58]. This set of complexes showed a quasireversible CV response in DCM solution (Table 5, entries [45][46][47][48].…”

Investigations of ternary complexes of Co(II) and Ni(II) with thiodiacetate anion and 1,10-phenanthroline or 2,2’-bipyridine in aqueous solutions

“…The present study constitutes a continuation of our earlier efforts in characterization of the oxydiacetate complexes in solutions [1,3]. It seems to be worth investigating how the substitution of the ethereal donor atom in the oxydiacetate ligand (ODA) by the sulphur donor atom (the thiodiacetate ligand, TDA) affects the stabilities of the complexes in solutions.…”

Bonding interactions in oxydiacetate and thiodiacetate cobalt(II) and nickel(II) complexes

“…In the course of our ongoing studies on polycarboxylates of 3d-metals [7][8][9][10][11][12], we have focused our attention on oxydiacetate and thiodiacetate complexes of nickel(II) and cobalt(II). A survey of the literature reveals that in the solid state oda 2− when acts as a tridentate ligand adopts the facconformation in the [Ni(oda)(H 2 O) 3 ]1.5H 2 O monomer [13].…”