Abstract
AbstractBy using multidentate ligand 2‐hydroxynicotinic acid (H2nica), six new lanthanide coordination polymers [Sm(Hnica)(H2O)2SO4]n (1), {[Sm3(Hnica)6(H2O)6(OH)]·3H2O·SO4}n (2), [Eu(Hnica)(H2O)2SO4]n (3), {[Eu3(Hnica)6(H2O)6(OH)]·6H2O·SO4}n (4), {[Tb(Hnica)2(H2O)2]ClO4·H2O}n (5), and {[Dy(Hnica)2(H2O)2]ClO4·H2O}n (6) were synthesized and characterized by elemental analysis, IR spectra, and X‐ray single‐crystal diffraction. Compounds 1 and 3 exhibit a 1D Ln–O–Ln chain structure. Compounds 2 and 4 show a 2D Kagomé lattice structure, whereas 5 and 6 display a 2D rhombic grid structure. The luminescent properties of 1–6 at room temperature were studied. Direct‐current (dc) magnetic susceptibility studies reveal antiferromagnetic interactions between LnIII ions in 1–6, and alternating‐current (ac) magnetic susceptibility data of 6 suggests frequency‐dependent out‐of‐phase signals below 5 K.
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