Samarium, Europium, and Gadolinium Complexes with 4-(2,1,3-Benzothiadiazol-4-ylamino)pent-3-en-2-onate

New lanthanide complexes with 4-(2,1,3-benzothiadiazol-4-ylamino)pent-3-en-2-onate (L – ) [Ln(L) 3 ] are synthesized using two methods: by the reaction of Ln(N(SiMe 3 ) 2 ) 3 with the protonated form of the ligand LH (Ln = Sm, Gd) and by the reaction of LnCl 3 (Ln = Eu) with LH in the presence of KN...

Full description

Saved in:
Bibliographic Details
Published in:Russian journal of coordination chemistry 2019, Vol.45 (1), p.30-35
Main Authors: Sukhikh, T. S., Ogienko, D. S., Bashirov, D. A., Kurat’eva, N. V., Smolentsev, A. I., Konchenko, S. N.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Coordination compounds
Crystal lattices
Electron transitions
Europium
Gadolinium
Inorganic Chemistry
Ligands
Photoluminescence
Physical Chemistry
Samarium
X-ray diffraction
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:New lanthanide complexes with 4-(2,1,3-benzothiadiazol-4-ylamino)pent-3-en-2-onate (L – ) [Ln(L) 3 ] are synthesized using two methods: by the reaction of Ln(N(SiMe 3 ) 2 ) 3 with the protonated form of the ligand LH (Ln = Sm, Gd) and by the reaction of LnCl 3 (Ln = Eu) with LH in the presence of KN(SiMe 3 ) 2 as a base. According to the X-ray diffraction data, the synthesized complexes [Ln(L) 3 ] · 0.5Solv (Solv = THF, C 7 H 8 ) are isotypical (CIF files CCDC nos. 1826520, 1826521, and 1826522 for Sm, Eu, and Gd, respectively). A specific feature of the structures is the disordering of the metal atom and one of the ligands over two positions when the fragments of the ligands are arranged via the head-to-tail type occupying the same volume of the space. This probably leads to failure in the crystal lattice. The photoluminescence spectra of [Sm(L) 3 ] · 0.5THF are recorded. A relationship between the coordination mode of the ligand and the position of the long-wavelength band of the electron transitions in the complexes with the L – ligand is revealed.
ISSN:1070-3284
1608-3318
DOI:10.1134/S1070328419010111