Stability constant studies on some new thioether carboxylic acid chelating agents

Mark M. Jones; Alton J. Banks; C. Hendricks Brown

doi:10.1016/0022-1902(75)80535-5

Stability constant studies on some new thioether carboxylic acid chelating agents

Mark M. Jones^*, Alton J. Banks, C. Hendricks Brown

^*Corresponding author for this work

Psychiatry and Behavioral Sciences

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

9 Scopus citations

Abstract

The ionization constants of four recently prepared thioethercarboxylic acid chelating agents have been determined along with the stability constants of the complexes of these chelating agents with Hg²⁺, Zn²⁺, Ca²⁺, Ni²⁺, Mg²⁺, Cd²⁺, and Cu²⁺. The marked selectivity of these chelating agents for Hg²⁺ is quite striking. For ions with which a bond to a thioether sulfur is not strong, the stability constants are fairly low. A combination of pH measurements and pM measurements were used to determine the stability constants of the species MY and MHY. Because of the geometry of these chelating agents the proton in MHY is far removed from the metal bonding site and a consequence of this is the fact that the stability constants for MY and MHY may be quite close in some cases.

Original language	English (US)
Pages (from-to)	761-765
Number of pages	5
Journal	Journal of Inorganic and Nuclear Chemistry
Volume	37
Issue number	3
DOIs	https://doi.org/10.1016/0022-1902(75)80535-5
State	Published - Mar 1975

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@article{1b74e2f866f046c0b36af8c67f313f83,

title = "Stability constant studies on some new thioether carboxylic acid chelating agents",

abstract = "The ionization constants of four recently prepared thioethercarboxylic acid chelating agents have been determined along with the stability constants of the complexes of these chelating agents with Hg2+, Zn2+, Ca2+, Ni2+, Mg2+, Cd2+, and Cu2+. The marked selectivity of these chelating agents for Hg2+ is quite striking. For ions with which a bond to a thioether sulfur is not strong, the stability constants are fairly low. A combination of pH measurements and pM measurements were used to determine the stability constants of the species MY and MHY. Because of the geometry of these chelating agents the proton in MHY is far removed from the metal bonding site and a consequence of this is the fact that the stability constants for MY and MHY may be quite close in some cases.",

author = "Jones, {Mark M.} and Banks, {Alton J.} and {Hendricks Brown}, C.",

note = "Funding Information: Acknowledgement--This work was performed under the auspices of the Center of Toxicology, Department of Biochemistry. Vanderbilt University School of Medicine, Nashville, Tennessee 37235, and supported by the United States Public Health services Center Grant ES00267.",

year = "1975",

month = mar,

doi = "10.1016/0022-1902(75)80535-5",

language = "English (US)",

volume = "37",

pages = "761--765",

journal = "Journal of Inorganic and Nuclear Chemistry",

issn = "0022-1902",

publisher = "Elsevier Limited",

number = "3",

}

TY - JOUR

T1 - Stability constant studies on some new thioether carboxylic acid chelating agents

AU - Jones, Mark M.

AU - Banks, Alton J.

AU - Hendricks Brown, C.

N1 - Funding Information: Acknowledgement--This work was performed under the auspices of the Center of Toxicology, Department of Biochemistry. Vanderbilt University School of Medicine, Nashville, Tennessee 37235, and supported by the United States Public Health services Center Grant ES00267.

PY - 1975/3

Y1 - 1975/3

N2 - The ionization constants of four recently prepared thioethercarboxylic acid chelating agents have been determined along with the stability constants of the complexes of these chelating agents with Hg2+, Zn2+, Ca2+, Ni2+, Mg2+, Cd2+, and Cu2+. The marked selectivity of these chelating agents for Hg2+ is quite striking. For ions with which a bond to a thioether sulfur is not strong, the stability constants are fairly low. A combination of pH measurements and pM measurements were used to determine the stability constants of the species MY and MHY. Because of the geometry of these chelating agents the proton in MHY is far removed from the metal bonding site and a consequence of this is the fact that the stability constants for MY and MHY may be quite close in some cases.

AB - The ionization constants of four recently prepared thioethercarboxylic acid chelating agents have been determined along with the stability constants of the complexes of these chelating agents with Hg2+, Zn2+, Ca2+, Ni2+, Mg2+, Cd2+, and Cu2+. The marked selectivity of these chelating agents for Hg2+ is quite striking. For ions with which a bond to a thioether sulfur is not strong, the stability constants are fairly low. A combination of pH measurements and pM measurements were used to determine the stability constants of the species MY and MHY. Because of the geometry of these chelating agents the proton in MHY is far removed from the metal bonding site and a consequence of this is the fact that the stability constants for MY and MHY may be quite close in some cases.

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U2 - 10.1016/0022-1902(75)80535-5

DO - 10.1016/0022-1902(75)80535-5

M3 - Article

AN - SCOPUS:0346846136

SN - 0022-1902

VL - 37

SP - 761

EP - 765

JO - Journal of Inorganic and Nuclear Chemistry

JF - Journal of Inorganic and Nuclear Chemistry

IS - 3

ER -

Stability constant studies on some new thioether carboxylic acid chelating agents

Abstract

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