@article { ISI:000370464800023,
	title = {Complexation key to a pH locked redox reaction},
	journal = {Journal of Chemical Education},
	volume = {93},
	number = {2},
	year = {2016},
	month = {FEB},
	pages = {355-361},
	publisher = {AMER CHEMICAL SOC},
	address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA},
	abstract = {<p>An unfavorable pH can block a feasible electron transfer for a pH dependent redox reaction. In this experiment, a series of potentiometric titrations demonstrate the sequential loss in feasibility of iron(II) dichromate redox reaction over a pH range of 0-4. The pH at which this reaction failed to occur was termed as a pH locked reaction. The comparative ability of 10 selected iron binding ligands with varied propensity for the redox potential modification of Fe(III)/Fe(II) redox couple to restore/unlock the pH locked redox reaction is shown using potentiometric titrations. The spectrophotometric speciation analysis of Fe(III) Tiron complexation with pH was carried out to explain the differing ability of EDTA and Tiron to unlock the reaction under different pH Conditions. The experiment illustrates how environmental, biological redox reactions avoid severe laboratory conditions to occur and can be explored in the design of novel redox systems for natural attenuation of environmental toxins to their non- or lesser-toxic forms. The experiment also demonstrates prudent laboratory practice for safe waste disposal.</p>},
	keywords = {Analytical Chemistry, Aqueous Solution Chemistry, Coordination Compounds, Oxidation/Reduction, pH, Physical Chemistry, Potentiometry, Second-Year Undergraduate, Thermodynamics, Titration/Volumetric Analysis, Upper-Division Undergraduate},
	issn = {0021-9584},
	doi = {10.1021/acs.jchemed.5b00499},
	author = {Rizvi, Masood Ahmad and Dangat, Yuvraj B. and Shams, Tahir and Khan, Khaliquz Zaman}
}
@article {45730,
	title = {Computational survey of ligand properties on iron(III)-iron(II) redox potential: exploring natural attenuation of nitroaromatic compounds},
	journal = {Monatshefte Fur Chemie},
	volume = {148},
	year = {2017},
	month = {APR},
	pages = {655-668},
	type = {Article},
	abstract = {<p>This study is a computational investigation of the ligand effect on the redox potential of iron redox couple aimed at screening these systems for novel applications. The influence of common and naturally available organic compounds with diverse ligand characteristics (nature of donor site, chelation, pre-organization, degree of back acceptance) on the redox potential of iron(III)-iron(II) redox couple has been theoretically calculated using an appropriate level of density functional theory (DFT). The DFT calculated redox potentials of iron complexes are explored to supplement, corroborate, and predict the experimental behavior of the studied systems towards environmental reduction of nitroaromatic compounds to corresponding anilines. The comparative avidity of iron complexes with cysteine derivatives for the reduction of nitroaromatic compounds has been theoretically explored and based on structure-activity relationship; new iron complexes with a range of reactivity and enhanced ability towards nitroaromatic reduction have been predicted.</p>},
	keywords = {Catechol derivatives, computational chemistry, Density functional theory, Iron complexes, Ligand effect on redox potential, Natural attenuation, Nitroaromatic compounds},
	issn = {0026-9247},
	doi = {10.1007/s00706-016-1813-8},
	author = {Rizvi, Masood Ahmad and Mane, Manoj and Khuroo, Mohammad Akbar and Peerzada, Ghulam Mustafa}
}
