Kinetic studies on H+- and OH−-catalysed aquation of bis-aspartatochromium(III)

Kita, Ewa; Kiersikowska, Emilia; Marai, Hasan; Mierkiewicz, Karolina

doi:10.1007/s11243-013-9775-8

Cited by 5 publications

(3 citation statements)

References 16 publications

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“…Recently, interest in the kinetics of the complexation reaction of transition metal compounds has increased. [1][2][3][4][5][6][7][8] For many coordination compounds, the aquation requires the introduction of a special promoter. The substitution reaction of complex compounds with special promoters may occur in acidic (the promoters are H + ions) or basic (the promoters are OHions) media or may be induced with Fe 3+ ions.…”

Section: Introductionmentioning

confidence: 99%

“…The substitution reaction of complex compounds with special promoters may occur in acidic (the promoters are H + ions) or basic (the promoters are OHions) media or may be induced with Fe 3+ ions. [1][2][3][4][5][6][7][8] Polycarboxylic anions are a group of organic compounds which are used in coordination chemistry as ligands, [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] because they stabilize metal ions in solutions 14 and, moreover, they are noncytotoxic. 15 Furthermore, the polycarboxylate coordination compounds of cobalt(II), nickel(II), 12,16,18 oxidovanadium(IV), 15,17 and copper(II) 19,20 have interesting antioxidant, antibacterial, and antifungal activities.…”

Section: Introductionmentioning

confidence: 99%

“…The substitution reaction of complex compounds with special promoters may occur in acidic (the promoters are H + ions) or basic (the promoters are OH – ions) media or may be induced with Fe 3+ ions. 1–8…”

Section: Introductionmentioning

confidence: 99%

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Aquation reaction of iminodiacetate complex of oxidovanadium(IV) with 2,2’-bipyridine induced by Fe(III) ions: Kinetic studies

Drzeżdżon

Piotrowska-Kirschling

Chmurzyński

et al. 2019

Progress in Reaction Kinetics and Mechanism

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The kinetics of the aquation reaction of the [VO(ida)(bipy)]·2H2O (VO(ida)(bipy)) complex (where ida = iminodiacetate anion and bipy = 2,2’-bipyridine) promoted by [Fe(H2O)6]3+ ions were investigated in aqueous solutions. Spectrophotometric studies were carried out at different temperatures in the range of 293.15–313.15 K. The concentration of the [Fe(H2O)6]3+ (Fe3+) ions was kept within the range of 2 × 10–4 to 8 × 10–4 mol L–1, and the concentration of VO(ida)(bipy) was 1 × 10–3 mol L–1. The values of the observable reaction rate constants were calculated based on the Glint computer program. Furthermore, the mechanism for the aquation of VO(ida)(bipy), induced by Fe(III) ions, has been proposed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Aquation reaction of iminodiacetate complex of oxidovanadium(IV) with 2,2’-bipyridine induced by Fe(III) ions: Kinetic studies

Drzeżdżon

Piotrowska-Kirschling

Chmurzyński

et al. 2019

Progress in Reaction Kinetics and Mechanism

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Hydrolytic chromium(III)–sulfur bond cleavage in chromium(III)–cysteine complexes

Kiersikowska

Kita

2015

Transition Met Chem

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Hydrolytic and redox transformations of chromium(III) bis-oxalato complexes with glutaminic acid and glutamine: a kinetic, UV–Vis and EPR, study

Kiersikowska

Kita

et al. 2016

Transition Met Chem

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The title complexes have been synthesized, chromatographically isolated and characterized by their ligands to metal ratio determinations and spectroscopic analyses. The kinetics of the first aquation stage, i.e., the amino acid chelate ring opening via the Cr-N bond cleavage, has been studied spectrophotometrically in acidic and alkaline media. Hydrogen peroxide oxidizes the complexes in alkaline media to CrO 4 2-anion and a relatively stable Cr(V) complex. Consecutive biphasic kinetics through two first-order steps were observed for the base hydrolysis and the oxidation process, whereas the acidcatalyzed aquation obeys a simple first-order pattern. Based on the kinetic and spectroscopic data, mechanisms of the coordinated amino acid liberation and chromium(III) oxidation are discussed.

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Kinetic studies on H+- and OH−-catalysed aquation of bis-aspartatochromium(III)

Cited by 5 publications

References 16 publications

Aquation reaction of iminodiacetate complex of oxidovanadium(IV) with 2,2’-bipyridine induced by Fe(III) ions: Kinetic studies

Aquation reaction of iminodiacetate complex of oxidovanadium(IV) with 2,2’-bipyridine induced by Fe(III) ions: Kinetic studies

Hydrolytic chromium(III)–sulfur bond cleavage in chromium(III)–cysteine complexes

Hydrolytic and redox transformations of chromium(III) bis-oxalato complexes with glutaminic acid and glutamine: a kinetic, UV–Vis and EPR, study

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