Kinetics and Mechanism of Palladium(II)-Catalyzed Oxidation of Inositol by Hexachloroplatinate(IV) in Perchlorate Solutions

Ahmed Fawzy; Ishaq A. Zaafarany; Khalid S. Khairou; Sheigha S. Ashour; Naeema Yarkandi

doi:doi:10.11648/j.ajac.20160405.15

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Kinetics and Mechanism of Palladium(II)-Catalyzed Oxidation of Inositol by Hexachloroplatinate(IV) in Perchlorate Solutions

Ahmed Fawzy, Ishaq A. Zaafarany, Khalid S. Khairou, Sheigha S. Ashour, Naeema Yarkandi

Published in American Journal of Applied Chemistry (Volume 4, Issue 5)

Received: 29 August 2016 Accepted: 8 September 2016 Published: 24 September 2016

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Abstract

Oxidation of inositol (INOS) by hexachloroplatinate(IV) complex (HCP) in perchlorate solutions in the presence of palladium(II) catalyst was studied spectrophotometrically. The reaction rate was very slow in the absence of the catalyst. The reaction exhibited a first order dependence on [HCP], and fractional-first order dependences with respect to [INOS], [H+] and [Pd(II)]. Increasing ionic strength and dielectric constant was found to increase the oxidation rate. A probable oxidation mechanism has been suggested and the rate-law expression has been derived. Both spectral and kinetic evidences revealed formation of a 1:1 intermediate complex between INOS and Pd(II) prior to the rate-controlling step. The final oxidation product of inositol was identified by both spectral and chemical analyses as the corresponding monoketone derivative, namely inosose. The activation parameters of the second order rate constant were evaluated and discussed.

Published in	American Journal of Applied Chemistry (Volume 4, Issue 5)
DOI	10.11648/j.ajac.20160405.15
Page(s)	185-191
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Inositol, Hexachloroplatinate(IV), Oxidation, Palladium(II), Kinetics, Mechanism

References

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APA Style

Ahmed Fawzy, Ishaq A. Zaafarany, Khalid S. Khairou, Sheigha S. Ashour, Naeema Yarkandi. (2016). Kinetics and Mechanism of Palladium(II)-Catalyzed Oxidation of Inositol by Hexachloroplatinate(IV) in Perchlorate Solutions. American Journal of Applied Chemistry, 4(5), 185-191. https://doi.org/10.11648/j.ajac.20160405.15

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ACS Style

Ahmed Fawzy; Ishaq A. Zaafarany; Khalid S. Khairou; Sheigha S. Ashour; Naeema Yarkandi. Kinetics and Mechanism of Palladium(II)-Catalyzed Oxidation of Inositol by Hexachloroplatinate(IV) in Perchlorate Solutions. Am. J. Appl. Chem. 2016, 4(5), 185-191. doi: 10.11648/j.ajac.20160405.15

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AMA Style

Ahmed Fawzy, Ishaq A. Zaafarany, Khalid S. Khairou, Sheigha S. Ashour, Naeema Yarkandi. Kinetics and Mechanism of Palladium(II)-Catalyzed Oxidation of Inositol by Hexachloroplatinate(IV) in Perchlorate Solutions. Am J Appl Chem. 2016;4(5):185-191. doi: 10.11648/j.ajac.20160405.15

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@article{10.11648/j.ajac.20160405.15,
  author = {Ahmed Fawzy and Ishaq A. Zaafarany and Khalid S. Khairou and Sheigha S. Ashour and Naeema Yarkandi},
  title = {Kinetics and Mechanism of Palladium(II)-Catalyzed Oxidation of Inositol by Hexachloroplatinate(IV) in Perchlorate Solutions},
  journal = {American Journal of Applied Chemistry},
  volume = {4},
  number = {5},
  pages = {185-191},
  doi = {10.11648/j.ajac.20160405.15},
  url = {https://doi.org/10.11648/j.ajac.20160405.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajac.20160405.15},
  abstract = {Oxidation of inositol (INOS) by hexachloroplatinate(IV) complex (HCP) in perchlorate solutions in the presence of palladium(II) catalyst was studied spectrophotometrically. The reaction rate was very slow in the absence of the catalyst. The reaction exhibited a first order dependence on [HCP], and fractional-first order dependences with respect to [INOS], [H+] and [Pd(II)]. Increasing ionic strength and dielectric constant was found to increase the oxidation rate. A probable oxidation mechanism has been suggested and the rate-law expression has been derived. Both spectral and kinetic evidences revealed formation of a 1:1 intermediate complex between INOS and Pd(II) prior to the rate-controlling step. The final oxidation product of inositol was identified by both spectral and chemical analyses as the corresponding monoketone derivative, namely inosose. The activation parameters of the second order rate constant were evaluated and discussed.},
 year = {2016}
}

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TY  - JOUR
T1  - Kinetics and Mechanism of Palladium(II)-Catalyzed Oxidation of Inositol by Hexachloroplatinate(IV) in Perchlorate Solutions
AU  - Ahmed Fawzy
AU  - Ishaq A. Zaafarany
AU  - Khalid S. Khairou
AU  - Sheigha S. Ashour
AU  - Naeema Yarkandi
Y1  - 2016/09/24
PY  - 2016
N1  - https://doi.org/10.11648/j.ajac.20160405.15
DO  - 10.11648/j.ajac.20160405.15
T2  - American Journal of Applied Chemistry
JF  - American Journal of Applied Chemistry
JO  - American Journal of Applied Chemistry
SP  - 185
EP  - 191
PB  - Science Publishing Group
SN  - 2330-8745
UR  - https://doi.org/10.11648/j.ajac.20160405.15
AB  - Oxidation of inositol (INOS) by hexachloroplatinate(IV) complex (HCP) in perchlorate solutions in the presence of palladium(II) catalyst was studied spectrophotometrically. The reaction rate was very slow in the absence of the catalyst. The reaction exhibited a first order dependence on [HCP], and fractional-first order dependences with respect to [INOS], [H+] and [Pd(II)]. Increasing ionic strength and dielectric constant was found to increase the oxidation rate. A probable oxidation mechanism has been suggested and the rate-law expression has been derived. Both spectral and kinetic evidences revealed formation of a 1:1 intermediate complex between INOS and Pd(II) prior to the rate-controlling step. The final oxidation product of inositol was identified by both spectral and chemical analyses as the corresponding monoketone derivative, namely inosose. The activation parameters of the second order rate constant were evaluated and discussed.
VL  - 4
IS  - 5
ER  -

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Author Information

Ahmed Fawzy

Chemistry Department, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia;Chemistry Department, Faculty of Science, Assiut University, Assiut, Egypt
Ishaq A. Zaafarany

Chemistry Department, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia
Khalid S. Khairou

Chemistry Department, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia
Sheigha S. Ashour

Chemistry Department, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia
Naeema Yarkandi

Chemistry Department, Faculty of Applied Science, Umm Al-Qura University, Makkah, Saudi Arabia

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APA Style

Ahmed Fawzy, Ishaq A. Zaafarany, Khalid S. Khairou, Sheigha S. Ashour, Naeema Yarkandi. (2016). Kinetics and Mechanism of Palladium(II)-Catalyzed Oxidation of Inositol by Hexachloroplatinate(IV) in Perchlorate Solutions. American Journal of Applied Chemistry, 4(5), 185-191. https://doi.org/10.11648/j.ajac.20160405.15

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ACS Style

Ahmed Fawzy; Ishaq A. Zaafarany; Khalid S. Khairou; Sheigha S. Ashour; Naeema Yarkandi. Kinetics and Mechanism of Palladium(II)-Catalyzed Oxidation of Inositol by Hexachloroplatinate(IV) in Perchlorate Solutions. Am. J. Appl. Chem. 2016, 4(5), 185-191. doi: 10.11648/j.ajac.20160405.15

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AMA Style

Ahmed Fawzy, Ishaq A. Zaafarany, Khalid S. Khairou, Sheigha S. Ashour, Naeema Yarkandi. Kinetics and Mechanism of Palladium(II)-Catalyzed Oxidation of Inositol by Hexachloroplatinate(IV) in Perchlorate Solutions. Am J Appl Chem. 2016;4(5):185-191. doi: 10.11648/j.ajac.20160405.15

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@article{10.11648/j.ajac.20160405.15,
  author = {Ahmed Fawzy and Ishaq A. Zaafarany and Khalid S. Khairou and Sheigha S. Ashour and Naeema Yarkandi},
  title = {Kinetics and Mechanism of Palladium(II)-Catalyzed Oxidation of Inositol by Hexachloroplatinate(IV) in Perchlorate Solutions},
  journal = {American Journal of Applied Chemistry},
  volume = {4},
  number = {5},
  pages = {185-191},
  doi = {10.11648/j.ajac.20160405.15},
  url = {https://doi.org/10.11648/j.ajac.20160405.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajac.20160405.15},
  abstract = {Oxidation of inositol (INOS) by hexachloroplatinate(IV) complex (HCP) in perchlorate solutions in the presence of palladium(II) catalyst was studied spectrophotometrically. The reaction rate was very slow in the absence of the catalyst. The reaction exhibited a first order dependence on [HCP], and fractional-first order dependences with respect to [INOS], [H+] and [Pd(II)]. Increasing ionic strength and dielectric constant was found to increase the oxidation rate. A probable oxidation mechanism has been suggested and the rate-law expression has been derived. Both spectral and kinetic evidences revealed formation of a 1:1 intermediate complex between INOS and Pd(II) prior to the rate-controlling step. The final oxidation product of inositol was identified by both spectral and chemical analyses as the corresponding monoketone derivative, namely inosose. The activation parameters of the second order rate constant were evaluated and discussed.},
 year = {2016}
}

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TY  - JOUR
T1  - Kinetics and Mechanism of Palladium(II)-Catalyzed Oxidation of Inositol by Hexachloroplatinate(IV) in Perchlorate Solutions
AU  - Ahmed Fawzy
AU  - Ishaq A. Zaafarany
AU  - Khalid S. Khairou
AU  - Sheigha S. Ashour
AU  - Naeema Yarkandi
Y1  - 2016/09/24
PY  - 2016
N1  - https://doi.org/10.11648/j.ajac.20160405.15
DO  - 10.11648/j.ajac.20160405.15
T2  - American Journal of Applied Chemistry
JF  - American Journal of Applied Chemistry
JO  - American Journal of Applied Chemistry
SP  - 185
EP  - 191
PB  - Science Publishing Group
SN  - 2330-8745
UR  - https://doi.org/10.11648/j.ajac.20160405.15
AB  - Oxidation of inositol (INOS) by hexachloroplatinate(IV) complex (HCP) in perchlorate solutions in the presence of palladium(II) catalyst was studied spectrophotometrically. The reaction rate was very slow in the absence of the catalyst. The reaction exhibited a first order dependence on [HCP], and fractional-first order dependences with respect to [INOS], [H+] and [Pd(II)]. Increasing ionic strength and dielectric constant was found to increase the oxidation rate. A probable oxidation mechanism has been suggested and the rate-law expression has been derived. Both spectral and kinetic evidences revealed formation of a 1:1 intermediate complex between INOS and Pd(II) prior to the rate-controlling step. The final oxidation product of inositol was identified by both spectral and chemical analyses as the corresponding monoketone derivative, namely inosose. The activation parameters of the second order rate constant were evaluated and discussed.
VL  - 4
IS  - 5
ER  -

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