Stability constant studies on some new thioether carboxylic acid chelating agents

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

Research output: Contribution to journalArticle

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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 languageEnglish
Pages (from-to)761-765
Number of pages5
JournalJournal of Inorganic and Nuclear Chemistry
Volume37
Issue number3
DOIs
StatePublished - Jan 1 1975

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Sulfides
Chelating Agents
Carboxylic Acids
Chelation
Carboxylic acids
carboxylic acids
metal bonding
Sulfur
Ionization
Protons
Metals
Ions
sulfur
selectivity
Acids
Geometry
ionization
acids
protons
geometry

Cite this

Stability constant studies on some new thioether carboxylic acid chelating agents. / Jones, Mark M.; Banks, Alton J.; Hendricks Brown, C.

In: Journal of Inorganic and Nuclear Chemistry, Vol. 37, No. 3, 01.01.1975, p. 761-765.

Research output: Contribution to journalArticle

Jones, Mark M. ; Banks, Alton J. ; Hendricks Brown, C. / Stability constant studies on some new thioether carboxylic acid chelating agents. In: Journal of Inorganic and Nuclear Chemistry. 1975 ; Vol. 37, No. 3. pp. 761-765.
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