Spectrophotometric determination of acidity constants of salicylaldoxime in aqueous solution at 25 °C and ionic strength of 0.5 M controlled with NaCl

Joel Tshuma; Georgina Alarcón-Ángeles; Elia Palacios-Beas; Roberto Vargas-García; María Teresa Ramírez-Silva; Alberto Rojas-Hernández

doi:10.1016/j.saa.2006.05.004

Spectrophotometric determination of acidity constants of salicylaldoxime in aqueous solution at 25 °C and ionic strength of 0.5 M controlled with NaCl

Joel Tshuma, Georgina Alarcón-Ángeles, Elia Palacios-Beas, Roberto Vargas-García, María Teresa Ramírez-Silva, Alberto Rojas-Hernández

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7 Scopus citations

Abstract

The equilibrium constants of salicylaldoxime in water at 25 °C, 0.5 M of ionic strength with NaCl and concentration of 1 × 10^-4 M were determined spectrophotometrically. The spectral data were processed using SQUAD program. The salicylaldoxime in acid medium has the value of pK_a1 = 1.224 ± 0.027. In alkaline medium the salicylaldoxime has the values of pK_a2 = 8.551 ± 0.024 and pK_a3 = 11.728 ± 0.016.

Original language	English
Pages (from-to)	879-883
Number of pages	5
Journal	Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume	66
Issue number	4-5
DOIs	https://doi.org/10.1016/j.saa.2006.05.004
State	Published - Apr 2007
Externally published	Yes

Keywords

Acidity constants
Chelating agents
Hydroxyoximes
Oximes

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10.1016/j.saa.2006.05.004

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Tshuma, J., Alarcón-Ángeles, G., Palacios-Beas, E., Vargas-García, R., Ramírez-Silva, M. T., & Rojas-Hernández, A. (2007). Spectrophotometric determination of acidity constants of salicylaldoxime in aqueous solution at 25 °C and ionic strength of 0.5 M controlled with NaCl. Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 66(4-5), 879-883. https://doi.org/10.1016/j.saa.2006.05.004

@article{019c6f49a7b44d82b839f2f2e285988e,

title = "Spectrophotometric determination of acidity constants of salicylaldoxime in aqueous solution at 25 °C and ionic strength of 0.5 M controlled with NaCl",

abstract = "The equilibrium constants of salicylaldoxime in water at 25 °C, 0.5 M of ionic strength with NaCl and concentration of 1 × 10-4 M were determined spectrophotometrically. The spectral data were processed using SQUAD program. The salicylaldoxime in acid medium has the value of pKa1 = 1.224 ± 0.027. In alkaline medium the salicylaldoxime has the values of pKa2 = 8.551 ± 0.024 and pKa3 = 11.728 ± 0.016.",

keywords = "Acidity constants, Chelating agents, Hydroxyoximes, Oximes",

author = "Joel Tshuma and Georgina Alarc{\'o}n-{\'A}ngeles and Elia Palacios-Beas and Roberto Vargas-Garc{\'i}a and Ram{\'i}rez-Silva, {Mar{\'i}a Teresa} and Alberto Rojas-Hern{\'a}ndez",

note = "Funding Information: We want to acknowledge by partial financial support to CONACyT through the 46124 project and to PROMEP through the Analytical Chemistry Group UAM-I-CA-33, PIFI-3.",

year = "2007",

month = apr,

doi = "10.1016/j.saa.2006.05.004",

language = "Ingl{\'e}s",

volume = "66",

pages = "879--883",

journal = "Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy",

issn = "1386-1425",

number = "4-5",

}

Tshuma, J, Alarcón-Ángeles, G, Palacios-Beas, E , Vargas-García, R, Ramírez-Silva, MT & Rojas-Hernández, A 2007, 'Spectrophotometric determination of acidity constants of salicylaldoxime in aqueous solution at 25 °C and ionic strength of 0.5 M controlled with NaCl', Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, vol. 66, no. 4-5, pp. 879-883. https://doi.org/10.1016/j.saa.2006.05.004

Spectrophotometric determination of acidity constants of salicylaldoxime in aqueous solution at 25 °C and ionic strength of 0.5 M controlled with NaCl. / Tshuma, Joel; Alarcón-Ángeles, Georgina; Palacios-Beas, Elia et al.
In: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, Vol. 66, No. 4-5, 04.2007, p. 879-883.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Spectrophotometric determination of acidity constants of salicylaldoxime in aqueous solution at 25 °C and ionic strength of 0.5 M controlled with NaCl

AU - Tshuma, Joel

AU - Alarcón-Ángeles, Georgina

AU - Palacios-Beas, Elia

AU - Vargas-García, Roberto

AU - Ramírez-Silva, María Teresa

AU - Rojas-Hernández, Alberto

N1 - Funding Information: We want to acknowledge by partial financial support to CONACyT through the 46124 project and to PROMEP through the Analytical Chemistry Group UAM-I-CA-33, PIFI-3.

PY - 2007/4

Y1 - 2007/4

N2 - The equilibrium constants of salicylaldoxime in water at 25 °C, 0.5 M of ionic strength with NaCl and concentration of 1 × 10-4 M were determined spectrophotometrically. The spectral data were processed using SQUAD program. The salicylaldoxime in acid medium has the value of pKa1 = 1.224 ± 0.027. In alkaline medium the salicylaldoxime has the values of pKa2 = 8.551 ± 0.024 and pKa3 = 11.728 ± 0.016.

AB - The equilibrium constants of salicylaldoxime in water at 25 °C, 0.5 M of ionic strength with NaCl and concentration of 1 × 10-4 M were determined spectrophotometrically. The spectral data were processed using SQUAD program. The salicylaldoxime in acid medium has the value of pKa1 = 1.224 ± 0.027. In alkaline medium the salicylaldoxime has the values of pKa2 = 8.551 ± 0.024 and pKa3 = 11.728 ± 0.016.

KW - Acidity constants

KW - Chelating agents

KW - Hydroxyoximes

KW - Oximes

UR - http://www.scopus.com/inward/record.url?scp=33847417552&partnerID=8YFLogxK

U2 - 10.1016/j.saa.2006.05.004

DO - 10.1016/j.saa.2006.05.004

M3 - Artículo

SN - 1386-1425

VL - 66

SP - 879

EP - 883

JO - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy

JF - Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy

IS - 4-5

ER -

Tshuma J, Alarcón-Ángeles G, Palacios-Beas E , Vargas-García R, Ramírez-Silva MT, Rojas-Hernández A. Spectrophotometric determination of acidity constants of salicylaldoxime in aqueous solution at 25 °C and ionic strength of 0.5 M controlled with NaCl. Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy. 2007 Apr;66(4-5):879-883. doi: 10.1016/j.saa.2006.05.004

Spectrophotometric determination of acidity constants of salicylaldoxime in aqueous solution at 25 °C and ionic strength of 0.5 M controlled with NaCl

Abstract

Keywords

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