Sc(III) Complexes of 1,4,7-Triazacyclononane-1,4,7-triacetic Acid and Its Monoamides
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F25%3A00642018" target="_blank" >RIV/61388963:_____/25:00642018 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/25:10505992
Result on the web
<a href="https://doi.org/10.1021/acs.inorgchem.5c04142" target="_blank" >https://doi.org/10.1021/acs.inorgchem.5c04142</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.inorgchem.5c04142" target="_blank" >10.1021/acs.inorgchem.5c04142</a>
Alternative languages
Result language
angličtina
Original language name
Sc(III) Complexes of 1,4,7-Triazacyclononane-1,4,7-triacetic Acid and Its Monoamides
Original language description
Scandium(III) complexes with H3nota and its N-ethyl (H2 L 1) and N,N-diethyl (H2 L 2) monoamides were studied in the solid state and solution. Potentiometric measurements showed high stabilities of the binary ScIII complexes with the ligands (log K [Sc(L)] = 19.50, 16.64, and 17.94 for H3nota, H2 L 1 and H2 L,2 respectively) and weak coordination of the second ligand molecule under the ligand excess. The chemical model was confirmed by 45Sc NMR. Multinuclear NMR spectroscopy was used to study the ternary ScIII-ligand-oxalate systems. The results showed the presence of species with 2:1 and 1:1 [Sc(L)]-to-oxalate stoichiometry. Ternary complexes with the nota-monoamides form two isomers differing in the position of oxalate versus amide pendant arm. In the solid state, the [Sc(L)] complexes form oligomers interconnected through ligand carboxylate groups. Crystallization from solutions containing H2O2 or oxalate anions yielded ternary complexes. In all binary and ternary complexes, the ScIII ion is octacoordinated with the N3O4O1 coordination mode. All of the carboxylate groups of the ligands are coordinated in the O4-plane. The apical position is occupied by an oxygen atom of water, peroxide, or carboxylate anion. The apical Sc-O bonds are usually longer compared to those of the oxygen atoms forming the O4-plane.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10402 - Inorganic and nuclear chemistry
Result continuities
Project
<a href="/en/project/TH78020003" target="_blank" >TH78020003: Imaging and Inhibitor Probe for Alzheimer's Disease Diagnostic and Treatment</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Inorganic Chemistry
ISSN
0020-1669
e-ISSN
1520-510X
Volume of the periodical
64
Issue of the periodical within the volume
46
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
22928-22938
UT code for WoS article
001613517200001
EID of the result in the Scopus database
2-s2.0-105022618947