Comparison of energy interaction parameters for the complexation of Pr(III) with glutathione reduced (GSH) in absence and presence of Zn(II) in aqueous and aquated organic solvents using 4f–4f transition spectra as PROBE

Singh, Th. David; Sumitra, Ch.; Yaiphaba, N.; Devi, H. Debecca; Devi, M.; Singh, Narendra

doi:10.1016/j.saa.2004.06.044

Cited by 16 publications

(3 citation statements)

References 20 publications

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“…Because the enhanced intensity of this band is only observed in the IL after complexation with Cl – , we ascribe it to ligand-mediated pseudohypersensitivity . In fact, the pseudohypersensitivity of this particular transition is well-known and is used routinely to probe the complexation of Pr 3+ with various biomolecules. , …”

Section: Resultsmentioning

confidence: 94%

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An Electrochemical and Spectroscopic Study of Nd(III) and Pr(III) Coordination in the 1-Butyl-1-methylpyrrolidinium Bis(trifluoromethylsulfonyl)imide Ionic Liquid Containing Chloride Ion

Chou

Hussey

2014

Inorg. Chem.

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The coordination and accessible oxidation states of Nd and Pr were investigated in 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide (BuMePyroTf2N) by using electronic absorption spectroscopy, cyclic staircase voltammetry, and controlled potential coulometry. These experiments were carried out in the neat ionic liquid (IL) and in the IL containing free Cl(-) from the dissolution of BuMePyroCl. The electrolytic dissolution of Ln = Nd and Pr metal in this IL produces only the respective Ln(3+) ions. These trivalent species can be reduced to Ln(2+), but the resulting divalent species exhibit only transient stability, undergoing rapid disproportionation to Ln(3+) and Ln(0). The intensity of the hypersensitive (4)G5/2 ← (4)I9/2 electronic transition for Nd(3+) dissolved in the IL was substantially larger than it was in noncoordinating solvents such as aqueous HClO4, indicating moderate interactions between Nd(3+) and Tf2N(-) ions, probably resulting in anionic species such as [Nd(Tf2N)x]((x-3)-). The addition of Cl(-) to [Ln(Tf2N)x]((x-3)-) solutions results in the precipitation of LnCl3(s) (s = solid). The LnCl3(s) redissolves to give the octahedral complex [LnCl6](3-) as the Cl(-) concentration is raised further. In the IL containing excess chloride, the (3)P0 ← (3)H4 transition for [PrCl6](3-) exhibits ligand-mediated pseudohypersensitive behavior.

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Section: Resultsmentioning

confidence: 94%

“…42 In fact, the pseudohypersensitivity of this particular transition is well-known and is used routinely to probe the complexation of Pr 3+ with various biomolecules. 46,47…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

An Electrochemical and Spectroscopic Study of Nd(III) and Pr(III) Coordination in the 1-Butyl-1-methylpyrrolidinium Bis(trifluoromethylsulfonyl)imide Ionic Liquid Containing Chloride Ion

Chou

Hussey

2014

Inorg. Chem.

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“…Table 2 shows the values of calculated and observed energies for the four transitions of Pr(III) as well as root mean square deviation (RMS). RMS indicates the correctness of the energy parameters [24]. The values of these energy parameters change with change of solvents indicating significant influence of solvents on energy parameters.…”

Section: Resultsmentioning

confidence: 94%

4f–4f Spectral Analysis and Solvent Effect for the Interaction of Pr(III) with l-Tryptophan Using Different Aquated Solvents in the Presence and Absence of Zn(II)

Naorem

Singh

2019

Chemistry Africa

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In this study, the absorption spectra due to the interaction between Pr(III) and l-tryptophan system exhibiting 4f-4f transitions in presence and absence of Zn(II) using different aquated organic solvents such as methanol, dioxane, acetonitrile and N,N-dimethylformamide (DMF) were investigated and the same were also analyzed for the equimolar mixtures (1:1) of two different solvents. The energy parameters such as Slater-Condon (F K ) factor, Lande spin-orbit coupling constant ( 4f ), Nephelauxetic ratio ( ) , bonding parameter (b 1/2 ) and percent covalency ( ) , are also calculated and the observed variation in these parameters with the change of solvents indicates the nature of bond formed between Pr(III) and l-tryptophan. The oscillator strength (P) and Judd-Ofelt parameters T λ (λ = 2, 4, 6) have also been determined for the four transitions namely 3 H 4 to 3 P 2 , 3 P 1 , 3 P 0 and 1 D 2 .The solvent DMF has the most effective for the promotion of 4f-4f electric dipole intensity. Graphic abstractComparative absorption spectra of Pr(III):l-Tryptophan in different solvents.

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Complexation of Pr3+ with L-methionine in the presence/absence of Mg2+ : Their reaction dynamics and thermodynamic properties

Thakro

Sanchu

Imsong

et al. 2022

Chemical Physics Impact

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Comparison of energy interaction parameters for the complexation of Pr(III) with glutathione reduced (GSH) in absence and presence of Zn(II) in aqueous and aquated organic solvents using 4f–4f transition spectra as PROBE

Cited by 16 publications

References 20 publications

An Electrochemical and Spectroscopic Study of Nd(III) and Pr(III) Coordination in the 1-Butyl-1-methylpyrrolidinium Bis(trifluoromethylsulfonyl)imide Ionic Liquid Containing Chloride Ion

An Electrochemical and Spectroscopic Study of Nd(III) and Pr(III) Coordination in the 1-Butyl-1-methylpyrrolidinium Bis(trifluoromethylsulfonyl)imide Ionic Liquid Containing Chloride Ion

4f–4f Spectral Analysis and Solvent Effect for the Interaction of Pr(III) with l-Tryptophan Using Different Aquated Solvents in the Presence and Absence of Zn(II)

Complexation of Pr3+ with L-methionine in the presence/absence of Mg2+ : Their reaction dynamics and thermodynamic properties

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