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Kinetics and mechanism of periodate oxidation of two ternary nitrilotriacetatochromium(III) complexes involving histidine and aspartate co-ligands

“…Also, an efficient oxidation of Hantzsch 1,4-dihydropyridines to their corresponding pyridine derivatives with (Bu 4 N)IO 4 catalyzed by [Mn(TPP)Cl] was reported [11]. An inner-sphere mechanism for oxidation of chromium(III) complexes of some amino acids [12,13] and nucleosides [14][15][16] by periodate has been proposed with the hydroxo group acting as bridging ligand, or through the substitution of coordinated H 2 O by [IO 4 ] -.…”

The kinetics of the reduction of tetraoxoiodate(VII) by n-(2-hydroxylethyl)ethylenediaminetriacetatocobaltate(II) ion in aqueous perchloric acid

“…They are also important oxidants for metal ions and organic compounds [3]. Its reduction reaction has generated interest as evidenced by available literature [4][5][6][7][8][9][10][11][12][13][14][15][16]. In these studies different acid dependences with respect to [Oxidant] and [Reductant] and mechanisms of reaction were reported.…”

“…In these studies different acid dependences with respect to [Oxidant] and [Reductant] and mechanisms of reaction were reported. While most of the studies reported inner-sphere mechanism [4][5][6][7][11][12][13][14][15], which is typical of IO 4 -reactions, others [8,9] reported outer-sphere mechanistic pathway and yet [10] established both parallel outer-/inner-sphere mechanism. The redox reaction of IO 4 -occurring by the inner-sphere mechanism is favored when it involves reductants that can offer bridging ligands [4,[16][17][18].…”

Inner-sphere oxidation of ternary nitrilotriacetatocobalt(II) complexes involving oxalate and phthalate by periodate

“…This behavior is expected, since the reaction takes place between species of the same charge. [16,21]. The rate law for the oxidation of [Co II -(nta)(ph)(H 2 O) 2 ] 3-by periodate is in agreement with the involvement of the deprotonated form of complex in the rate-determining step.…”

“…Oxidations of inorganic substrates by periodate are reported to proceed through an inner-sphere mechanism [14][15][16]. Also, oxidation of transition metal complexes was found to proceed via the inner-sphere mechanism [17,18].…”