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https://doi.org/10.5562/cca2584

Kinetics and Mechanism of Electron Transfer Reaction of an Adipato Bridged Iron(III)-Salen Complex with Dithionite Ion in Perchloric Acid Medium

Pius O. Ukoha ; Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Enugu State, Nigeria
Simeon Atiga ; Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Enugu State, Nigeria
Oguejiofo T. Ujam   ORCID icon orcid.org/0000-0002-5628-209X ; Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Enugu State, Nigeria
Jonnie N. Asegbeloyin ; Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Enugu State, Nigeria
Obinna C. Okpareke ; Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Enugu State, Nigeria
Solomon O. E. Okereke ; Department of Pure and Industrial Chemistry, Abia State University, Uturu, Imo State, Nigeria

Puni tekst: engleski, pdf (576 KB) str. 259-266 preuzimanja: 890* citiraj
APA 6th Edition
Ukoha, P.O., Atiga, S., Ujam, O.T., Asegbeloyin, J.N., Okpareke, O.C. i Okereke, S.O.E. (2015). Kinetics and Mechanism of Electron Transfer Reaction of an Adipato Bridged Iron(III)-Salen Complex with Dithionite Ion in Perchloric Acid Medium. Croatica Chemica Acta, 88 (3), 259-266. https://doi.org/10.5562/cca2584
MLA 8th Edition
Ukoha, Pius O., et al. "Kinetics and Mechanism of Electron Transfer Reaction of an Adipato Bridged Iron(III)-Salen Complex with Dithionite Ion in Perchloric Acid Medium." Croatica Chemica Acta, vol. 88, br. 3, 2015, str. 259-266. https://doi.org/10.5562/cca2584. Citirano 17.09.2021.
Chicago 17th Edition
Ukoha, Pius O., Simeon Atiga, Oguejiofo T. Ujam, Jonnie N. Asegbeloyin, Obinna C. Okpareke i Solomon O. E. Okereke. "Kinetics and Mechanism of Electron Transfer Reaction of an Adipato Bridged Iron(III)-Salen Complex with Dithionite Ion in Perchloric Acid Medium." Croatica Chemica Acta 88, br. 3 (2015): 259-266. https://doi.org/10.5562/cca2584
Harvard
Ukoha, P.O., et al. (2015). 'Kinetics and Mechanism of Electron Transfer Reaction of an Adipato Bridged Iron(III)-Salen Complex with Dithionite Ion in Perchloric Acid Medium', Croatica Chemica Acta, 88(3), str. 259-266. https://doi.org/10.5562/cca2584
Vancouver
Ukoha PO, Atiga S, Ujam OT, Asegbeloyin JN, Okpareke OC, Okereke SOE. Kinetics and Mechanism of Electron Transfer Reaction of an Adipato Bridged Iron(III)-Salen Complex with Dithionite Ion in Perchloric Acid Medium. Croatica Chemica Acta [Internet]. 2015 [pristupljeno 17.09.2021.];88(3):259-266. https://doi.org/10.5562/cca2584
IEEE
P.O. Ukoha, S. Atiga, O.T. Ujam, J.N. Asegbeloyin, O.C. Okpareke i S.O.E. Okereke, "Kinetics and Mechanism of Electron Transfer Reaction of an Adipato Bridged Iron(III)-Salen Complex with Dithionite Ion in Perchloric Acid Medium", Croatica Chemica Acta, vol.88, br. 3, str. 259-266, 2015. [Online]. https://doi.org/10.5562/cca2584

Sažetak
Redox kinetics of the reaction of an adipato bridged iron(III)-salen complex, [(Fe(salen))2adi] with dithionite ion, S2O42–, was investigated in perchloric acid at I = 0.05 mol dm–3 (NaClO4) and T = 29 ± 1 °C. Spectrophotometric titrations indicated consumption of one mole of S2O42– per mole of [(Fe(salen))2adi] reduced. Under pseudo-first order conditions of [S2O42–] above ten-fold excess of concentration of [(Fe(salen))2adi], observed rates increased with increase in [S2O42–] and second order rate constants were fairly constant (0.285 ± 0.01 dm3 mol–1 s–1) indicating first order dependence of the rate on [(Fe(salen))2adi]. A plot of logkobs versus log[S2O42–] was linear and gave a slope of 1.0 indicating first order dependence of the rate on [S2O42–]. The reaction rate increased with increase in [H+] within 3 × 10–3 mol dm–3 ≤ [H+] ≤ 14 × 10–3 mol dm–3. The reaction was unaffected by variation of ionic strength and dielectric constant of the medium. Addition of anion and cation did not catalyze the reaction. The reaction has been analyzed on the basis of an inner-sphere mechanism mediated by proton transfer.

Ključne riječi
kinetics; mechanism; dithionite; electron transfer reduction; iron(III)-salen complex

Hrčak ID: 150531

URI
https://hrcak.srce.hr/150531

Posjeta: 1.178 *