Abstract
In this study, we present eight new complexes and self-assemblies of Tb(III), Eu(III), Zn(II) and Cu(II) ions with novel pyridine carboxamides, L1 [methyl 4-methyl-3-(pyridine-4-carbonylamino)benzoate] and L2 [methyl 2-methyl-3-(pyridine-4-carbonylamino)benzoate], as heterocyclic ligands. Two luminescent and spatially organized coordination compounds were obtained with the use of the solvothermal synthesis method, (1) [Tb3(L1)4(BTC)3(H2O)3] (where BTC is benzene-1,3,5-tricarboxylic acid) and (5) [Eu(L2a)3(H2O)3](H2O)4. As a result of one pot reaction synthesis under reflux the d-electron metal ions and self-organization of ligands gave complexes (2) [Zn(L1)2Cl2], (3) [Cu(L1)2(SCN)2(H2O)], (4) [Cu(L1)2Cl2], hybrid salt (6) [(CuCl4)2-(L2b)22+](H2O), (7) [Cu(L2)2Cl2] and 1D-chain coordination polymer (8) [Cu(L2)2(SCN)2]. Identification of the obtained compounds was performed on the basis of the excitation, emission, 1H NMR, FT-IR spectra, luminescence lifetimes, SEM images, PXRD, single-crystal X-ray diffraction, MS, TGA and elemental analysis. Selected compounds were also analyzed in terms of their potential magnetic properties.
Graphical Abstract
Disclosure statement
No potential conflict of interest was reported by the authors.