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Kinetics and outer sphere electron transfer of some metallosurfactants by Fe(CN)64− in microheterogenous medium: a detailed thermodynamic approach

  • Karuppiah Nagaraj EMAIL logo , Raja Kaliyaperumal , Subramaniam Kamalesu , Chandramohan Govindasamy , Allur Subramaniyan Sivakumar , Suriyan Radha , Manda Saritha and Chelladurai Karuppiah
Published/Copyright: November 28, 2023
Zeitschrift für Physikalische Chemie
From the journal Zeitschrift für Physikalische Chemie Volume 238 Issue 1

Abstract

We report the rate of electron transfer reaction of complexes, cis-[M(ED)2(DOD)2]3+ (1), cis-[M(DP)2(DOD)2]3+ (2), cis-[M(TRE)(DOD)2]3+ (3), cis-[M(bpy)2(DOD)2]3+ (4) and cis-[M(PA)2(DOD)2]3+ (5) (M:Co, ED: ethylenediamine, TRE: triethylenetetramine, DP: diaminopropane, PA: phenanthroline, C12H25NH2: dodecylamine (DOD) and bpy: bipyridine) and hexacyanoferrate ion in surface active ionic liquids (BMIM)Br were studied at 298–323 K by electronic absorption spectroscopy. Surfactant complexes 4 and 5, which have a higher ETR than complexes 1–3 based on the results obtained, have been explained based on the states of aggregation and hydrophobic transformations between the hydrocarbon portion of the surfactant compounds and (BMIM)Br. As a result, surface-active agent micelles in (BMIM)Br and increase ETR in between the system. The investigation of kinetic statistics outcomes suggest that reduction reaction between surface-active agent Co(III) complexes and hexacyanoferrate occurs via 2nd order and the ET is proposed as outer sphere. The remarkable increase in the rate for the ETR in (BMIM)Br with increase in the concentration of Co(III) complexes from 1–5. This can be attributing due to the fact those reactants with opposite charges and the amphipilicity of the ligand. The OSET of kinetics have been confirmed by the enthalpy and entropy (ΔS# and ΔH#) factors, and the isokinetic plots (ΔS# versus ΔH#) have shown that the reaction’s mechanism does not alter during the (BMIM)Br medium.

Keywords: surfactant complex; outer sphere electron transfer; ionic liquids; hydrophobic transformation; hexacyanoferrate(II)
Corresponding author: Karuppiah Nagaraj, School of Pharmacy, National Forensic Sciences University, 6M56+XP8, Police Bhavan Rd, Sector 9, Gandhinagar, Gujarat 382007, India, E-mail:

Funding source: King Saud University

Award Identifier / Grant number: Unassigned

Funding source: Researchers Supporting Project

Award Identifier / Grant number: RSPD2023R712

Acknowledgments

This project was supported by Researchers Supporting Project number (RSPD2023R712), King Saud University, Riyadh, Saudi Arabia. Dr. KN thanks to the School of Pharmacy, National Forensic Sciences University for providing the research facilities to carry out the research work.

  1. Research ethics: We followed research Ethics.

  2. Author contributions: All the authors have contributed equally for the entire content of this manuscript and approved its submission.

  3. Competing interests: The authors declare no conflict of interest financial or otherwise.

  4. Research funding: Researchers Supporting Project (RSPD2023R712) King Saud University, Riyadh, Saudi Arabia.

  5. Data availability: Data available on request.

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Supplementary Material

This article contains supplementary material (https://doi.org/10.1515/zpch-2023-0338).

Received: 2023-09-02
Accepted: 2023-11-05
Published Online: 2023-11-28
Published in Print: 2024-01-29

© 2023 Walter de Gruyter GmbH, Berlin/Boston

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https://doi.org/10.1515/zpch-2023-0338
Keywords for this article
surfactant complex; outer sphere electron transfer; ionic liquids; hydrophobic transformation; hexacyanoferrate(II)

Articles in the same Issue

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  2. Review Article
  3. Potential of Gd-based nanocomposites (GdFeO3) as photocatalysts for the degradation of organic pollutants: a review
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