Influence of sodium dodecyl sulfate on the kinetics of complex formation between [PdCl(dien)](+) and sulfur containing ligands L-cysteine and glutathione
Само за регистроване кориснике
2003
Чланак у часопису (Објављена верзија)
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Приказ свих података о документуАпстракт
The effect of sodium dodecyl sulfate (SDS) micelles on the kinetics of the complex formation between [PdCl(dien)](+) and sulfur containing ligands L-cysteine and glutathione (GSH) was investigated by using the stopped-flow technique under pseudo-first order conditions (ligand in excess) in the acidity range from pH 1 to 6. The presence of anionic micelles induced the acceleration of the complex formation in the entire acidity range with the maxima corresponding to the first protolytic constant of the ligands. This effect was interpreted in terms of the attractive electrostatic interaction between reacting species and the micellar surface and their effective concentration in the vicinity of micelles. An increase of the ionic strength leads to a decrease of the rate of complex formation in the presence of anionic micelles due to competition of reactive species with cations originating from inert salt for the micellar surface. The calculation of activation parameters revealed that the ent...ropy of activation is strongly negative in the presence and in the absence of micelles, which is compatible with an associative reaction mechanism.
Извор:
Polyhedron, 2003, 22, 2, 279-285Издавач:
- Pergamon-Elsevier Science Ltd, Oxford
DOI: 10.1016/S0277-5387(02)01307-4
ISSN: 0277-5387
WoS: 000180473500008
Scopus: 2-s2.0-0037439042
Институција/група
PharmacyTY - JOUR AU - Vasić, Vesna AU - Čakar, Mira AU - Savić, J AU - Petrović, B AU - Nedeljković, J AU - Bugarcić, I PY - 2003 UR - https://farfar.pharmacy.bg.ac.rs/handle/123456789/456 AB - The effect of sodium dodecyl sulfate (SDS) micelles on the kinetics of the complex formation between [PdCl(dien)](+) and sulfur containing ligands L-cysteine and glutathione (GSH) was investigated by using the stopped-flow technique under pseudo-first order conditions (ligand in excess) in the acidity range from pH 1 to 6. The presence of anionic micelles induced the acceleration of the complex formation in the entire acidity range with the maxima corresponding to the first protolytic constant of the ligands. This effect was interpreted in terms of the attractive electrostatic interaction between reacting species and the micellar surface and their effective concentration in the vicinity of micelles. An increase of the ionic strength leads to a decrease of the rate of complex formation in the presence of anionic micelles due to competition of reactive species with cations originating from inert salt for the micellar surface. The calculation of activation parameters revealed that the entropy of activation is strongly negative in the presence and in the absence of micelles, which is compatible with an associative reaction mechanism. PB - Pergamon-Elsevier Science Ltd, Oxford T2 - Polyhedron T1 - Influence of sodium dodecyl sulfate on the kinetics of complex formation between [PdCl(dien)](+) and sulfur containing ligands L-cysteine and glutathione VL - 22 IS - 2 SP - 279 EP - 285 DO - 10.1016/S0277-5387(02)01307-4 ER -
@article{ author = "Vasić, Vesna and Čakar, Mira and Savić, J and Petrović, B and Nedeljković, J and Bugarcić, I", year = "2003", abstract = "The effect of sodium dodecyl sulfate (SDS) micelles on the kinetics of the complex formation between [PdCl(dien)](+) and sulfur containing ligands L-cysteine and glutathione (GSH) was investigated by using the stopped-flow technique under pseudo-first order conditions (ligand in excess) in the acidity range from pH 1 to 6. The presence of anionic micelles induced the acceleration of the complex formation in the entire acidity range with the maxima corresponding to the first protolytic constant of the ligands. This effect was interpreted in terms of the attractive electrostatic interaction between reacting species and the micellar surface and their effective concentration in the vicinity of micelles. An increase of the ionic strength leads to a decrease of the rate of complex formation in the presence of anionic micelles due to competition of reactive species with cations originating from inert salt for the micellar surface. The calculation of activation parameters revealed that the entropy of activation is strongly negative in the presence and in the absence of micelles, which is compatible with an associative reaction mechanism.", publisher = "Pergamon-Elsevier Science Ltd, Oxford", journal = "Polyhedron", title = "Influence of sodium dodecyl sulfate on the kinetics of complex formation between [PdCl(dien)](+) and sulfur containing ligands L-cysteine and glutathione", volume = "22", number = "2", pages = "279-285", doi = "10.1016/S0277-5387(02)01307-4" }
Vasić, V., Čakar, M., Savić, J., Petrović, B., Nedeljković, J.,& Bugarcić, I.. (2003). Influence of sodium dodecyl sulfate on the kinetics of complex formation between [PdCl(dien)](+) and sulfur containing ligands L-cysteine and glutathione. in Polyhedron Pergamon-Elsevier Science Ltd, Oxford., 22(2), 279-285. https://doi.org/10.1016/S0277-5387(02)01307-4
Vasić V, Čakar M, Savić J, Petrović B, Nedeljković J, Bugarcić I. Influence of sodium dodecyl sulfate on the kinetics of complex formation between [PdCl(dien)](+) and sulfur containing ligands L-cysteine and glutathione. in Polyhedron. 2003;22(2):279-285. doi:10.1016/S0277-5387(02)01307-4 .
Vasić, Vesna, Čakar, Mira, Savić, J, Petrović, B, Nedeljković, J, Bugarcić, I, "Influence of sodium dodecyl sulfate on the kinetics of complex formation between [PdCl(dien)](+) and sulfur containing ligands L-cysteine and glutathione" in Polyhedron, 22, no. 2 (2003):279-285, https://doi.org/10.1016/S0277-5387(02)01307-4 . .