Lanthanide complexes containing pentadentate s-triazine-based Schiff base ligand: Synthesis, structure and magnetic features

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F25%3A73630720" target="_blank" >RIV/61989592:15640/25:73630720 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0020169325001562?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0020169325001562?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ica.2025.122690" target="_blank" >10.1016/j.ica.2025.122690</a>

Result language
angličtina
Original language name
Lanthanide complexes containing pentadentate s-triazine-based Schiff base ligand: Synthesis, structure and magnetic features
Original language description
Five mononuclear Ln(III) complexes {Ln = Gd (1), Tb (2), Dy (3), Ho (4) and Er (5)} of the general composition [Ln(L)(NO3)(H2O)]& sdot;solv (solv = H2O and/or DMF) were synthesized and thoroughly characterized. The pentadentate H2L Schiff base ligand, formed by condensation of 2,4-bishydrazino-6-amino-s-triazine with 3-ethoxysalicylaldehyde, is coordinated to the Ln(III) atoms in the N3O2 donor set in an equatorial plane. The coordination geometry of the central metal atoms is then completed by a bidentate-bonded nitrato ligand and one water molecule, thus forming a biaugmented trigonal prism environment, as follows from the X-ray structure of complex 1. A detailed magnetic evaluation (static (dc) and dynamic (ac) data) of complexes 1-5 uncovered that they behave as magnetically diluted paramagnetics with weak antiferromagnetic features originating probably in the presence of non-covalent bonding in the solid samples. Only the complexes of Dy (3) and Er (5) showed signs of slow relaxation of magnetization with the estimated energy barrier values of Ueff = 9.4 (5) K (for 3) and Ueff = 9.9 (6) K (for 5), and relaxation times of tau 0 = 0.25 (8) mu s (for 3) and tau 0 = 0.45(9) mu s (for 5).
Czech name
—
Czech description
—

Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10402 - Inorganic and nuclear chemistry

Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)