Relations between Structural and Luminescence Properties of Novel Lanthanide Nitrate Complexes with Bis-phosphoramidate Ligands
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10405392" target="_blank" >RIV/00216208:11320/19:10405392 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=3Otcv5uiI2" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=3Otcv5uiI2</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.inorgchem.8b03611" target="_blank" >10.1021/acs.inorgchem.8b03611</a>
Alternative languages
Result language
angličtina
Original language name
Relations between Structural and Luminescence Properties of Novel Lanthanide Nitrate Complexes with Bis-phosphoramidate Ligands
Original language description
Five new bisphosphoramide-based Ln(III) nitrate complexes [La-2(NO3)(6)L-3(I)](n) (1), [Ce-2(NO3)(6)L-3(I)](n) (2), [Sm-2(NO3)(6)L-3(II)](n), (3), Sm-2(NO3)(6)L-3(III) (4), and Er(NO3)(3)L-2(III) (5) [L-I = piperazine-1,4-diylbis(diphenyl phosphine oxide), L-II = N,N'-(ethane-1,2-diyl)bis(N-methyl-P,P-diphenylphosphinic amide, and L-II = N,N'-(ethane-1,2-diyl)bis(P,P-diphenylphosphinic amide)] have been synthesized and characterized by elemental analysis, IR spectroscopy, thermogravimetric analysis (TGA), and single crystal X-ray and powder diffractions. The results of the X-ray diffraction analysis revealed the new polymorph of L-III, and the structural diversity of the synthesized complexes in the solid state. Complexes 1-3 display two-dimensional coordination polymers (2D-CP), containing layers with honeycomb (6, 3) topology. In these 2D-CPs, each Ln center (La, Ce, and Sm in 1, 2, and 3, respectively) could be considered as a triconnected node, linked by three bridging bisphosphoramide ligands as two-connecting linkers. In contrast, 4 is a discrete binuclear complex, in which bidentate L ill ligand has two entirely different conformations: the syn-chelating and the anti bridging. Cationic complex 5 shows the monomeric structure, where bidentate L-III adopts the syn-chelating conformation. A comprehensive luminescence investigation has been performed on free ligands and their corresponding complexes as well. The synthesized compounds display a variety of luminescence behavior, including the ligand-centered fluorescence in 1, 2, and 5, two distinct emission peaks in 1 and 2, characteristic Sm-centered f-f emission in 3 and 4, and excitation-dependent emission in L-III, 1, and 2. Furthermore, the time dependent density functional theory (TD-DFT) study was carried out on the reported compounds to understand the nature of the emission peaks and the observed luminescence properties. The solid-state emission quantum yields of lanthanide complexes were also determined at different excitation wavelengths.
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
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
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
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Volume of the periodical
58
Issue of the periodical within the volume
9
Country of publishing house
US - UNITED STATES
Number of pages
16
Pages from-to
5630-5645
UT code for WoS article
000467351100035
EID of the result in the Scopus database
2-s2.0-85064344018