Complexation of Metal Ions with TRAP (1,4,7-Triazacyclononane Phosphinic Acid) Ligands and 1,4,7-Triazacyclononane-1,4,7-triacetic Acid: Phosphinate-Containing Ligands as Unique Chelators for Trivalent Gallium

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F12%3A10119144" target="_blank" >RIV/00216208:11310/12:10119144 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1021/ic202103v" target="_blank" >http://dx.doi.org/10.1021/ic202103v</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/ic202103v" target="_blank" >10.1021/ic202103v</a>

Result language

angličtina

Original language name

Complexation of Metal Ions with TRAP (1,4,7-Triazacyclononane Phosphinic Acid) Ligands and 1,4,7-Triazacyclononane-1,4,7-triacetic Acid: Phosphinate-Containing Ligands as Unique Chelators for Trivalent Gallium

Original language description

Three phosphinic acid 1,4,7-triazacyclononane (TACN) derivatives bearing methylphosphinic (TRAP-H), methyl(phenyl)phosphinic (TRAP-Ph), or methyl-(hydroxymethyl)phosphinic acid (TRAP-OH) pendant arms were investigated as members of a new family of efficient Ga3+ chelators, TRAP ligands (triazacyclononane phosphinic acids). Stepwise protonation constants of ligands and stability constants of their complexes with Ga3+, selected divalent metal, and Ln3+ ions were determined by potentiometry. These ligandsexhibit high thermodynamic selectivity for Ga3+ over the other metal ions and a selective complexation of smaller Mg2+ over Ca2+. Stabilities of the Ga3+ complexes are dependent on the basicity of the donor atoms: [Ga(NOTA)] (log KGaL = 29.6) > [Ga(TRAP-OH)] (log KGaL = 23.3) > [Ga(TRAP-H)] (log KGaL = 21.9). The [Ga(TRAP-OH)] complex exhibits unusual reversible rearrangement of the "in-cage" N3O3 complex to the "out-of-cage" O6 complex. The in-cage complex is present in acidic solutions

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CA - Inorganic chemistry

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2012

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Inorganic Chemistry

ISSN

0020-1669

e-ISSN

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Volume of the periodical

51

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

14

Pages from-to

577-590

UT code for WoS article

000298712000074

EID of the result in the Scopus database

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