On the mechanism of indium(III) complex formation with metallochromic indicators

Biver, Tarita; Kraiem, M.; Secco, Fernando; Venturini, Marcella

doi:10.1016/j.poly.2018.09.004

Cited by 3 publications

(1 citation statement)

References 38 publications

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“…On the other hand, Indium is a group 13 element that can form organometallic compounds with ligands such as -Me 3 , several aryl, alkyl, and allyl groups, which are mainly used for organic transformations (Shen et al 2013). In can form 1:1 coordination complex with ARS (Biver et al 2018) and this complex is used for detection of In(III) in trace amount (Zhang et al 2015). In the present study, we have attempted to use In-ARS complex for sensing of fluoride ion.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of In(III)-alizarin red S complex trap for efficient detection of fluoride ion in aqueous environs

Singh

Naskar

2021

J Anal Sci Technol

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The work discusses about the synthesis of indium-alizarin red S complex followed by its application toward the sensing of F¯ ion. At first, the interaction between indium and alizarin red S dye was studied at three different pH medium, pH 4, 7 and 9, of which pH 7 gave the best result. The indium-alizarin red S complex so obtained was then utilized for the ratiometric sensing of fluoride ion using absorption spectroscopy with variation of temperature. The lowest limit of detection (0.040 mM) was obtained at 313 K. The mechanism for the sensing of F¯ ion was then investigated using isothermal titration calorimetry. The endothermic nature of the interaction between F¯ ion with indium-alizarin red S complex shows temperature dependence on the sensing experiment. At the end, the utility of the technique toward natural sample was also examined. The present work reports a simple, rapid and efficient detection of fluoride anion in environmental water samples.

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Section: Introductionmentioning

confidence: 99%

Fabrication of In(III)-alizarin red S complex trap for efficient detection of fluoride ion in aqueous environs

Singh

Naskar

2021

J Anal Sci Technol

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An Application of Mechanics to Chemistry: the Dynamic Behaviour of Coupled Chemical Reactions Compared to that of the Two-Body Oscillator

Secco,

Biver

2023

J Solution Chem

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The dynamic behaviour of a chemical system made of two coupled reactions is compared with that of a mechanical system consisting of two oscillating bodies connected by springs. First, the principle of energy departure from equilibrium is employed to derive the motion equations of both systems. Subsequently, the relevant characteristic frequencies and the amplitude parameters are obtained and analysed in terms of “Normal Modes”. The results show that systems belonging to different branches of science can be analysed using the same methodologies. To elucidate the application of Normal Modes to chemistry, the dynamic analysis of a system consisting of a proton transfer reaction coupled to a complex formation reaction is described in the Supporting Information: the procedure enables the evaluation of rate constants, equilibrium constants and reaction enthalpies of a reacting chemical system made of two coupled reactions. The method is then extended to a cycle of three reactions.

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Spectroscopic and DFT Study of Alizarin Red S Complexes of Ga(III) in Semi-Aqueous Solution

2023

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A combined spectroscopic and computational approach has been used to study in detail the complexation between Ga(III) and ARS in solution. The NMR results revealed the formation of four Ga(III)/ARS complexes, at pH 4, differing in their metal:ligand stoichiometries or configuration, and point to a coordination mode through the ligand positions C-1 and C-9. For equimolar metal:ligand solutions, a 1:1 [Ga(ARS)(H2O)4]+ complex was formed, while for 1:2 molar ratio solutions, a [Ga(ARS)2(H2O)2]− complex, in which the two ligands are magnetically equivalent, is proposed. Based on DFT calculations, it was determined that this is a centrosymmetric structure with the ligands in an anti configuration. For solutions with a 1:3 molar ratio, two isomeric [Ga(ARS)3]3− complexes were detected by NMR, in which the ligands have a mer and a fac configuration around the metal centre. The DFT calculations provided structural details on the complexes and support the proposal of a 1,9 coordination mode. The infrared spectroscopy results, together with the calculation of the infrared spectra for the theoretically proposed structures, give further support to the conclusions above. Changes in the UV/vis absorption and fluorescence spectra of the ligand upon complexation revealed that ARS is a highly sensitive fluorescent probe for the detection of Ga(III).

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On the mechanism of indium(III) complex formation with metallochromic indicators

Cited by 3 publications

References 38 publications

Fabrication of In(III)-alizarin red S complex trap for efficient detection of fluoride ion in aqueous environs

Fabrication of In(III)-alizarin red S complex trap for efficient detection of fluoride ion in aqueous environs

An Application of Mechanics to Chemistry: the Dynamic Behaviour of Coupled Chemical Reactions Compared to that of the Two-Body Oscillator

Spectroscopic and DFT Study of Alizarin Red S Complexes of Ga(III) in Semi-Aqueous Solution

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