Abstract
Two series of lanthanide coordination polymers, {[Ln2(tabc)4(C2O4)(H2O)5]·H2O}n (Ln=Nd (1), Sm (2), Eu (3), Htabc=4-(1–1,2,4-triazolyl)benzoic acid) and {[Sm(tabc)(1,2-pdc)(H2O)2]·2H2O}n (4), have been constructed via hydrothermal conditions through adding different auxiliary ligands. Compounds 1–3 are two dimensional coordination layer comprised of {Ln1(COO)2} chains and {Ln2(COO)2} dinuclear units which are connected by oxalate groups, whereas compound 4 is one dimensional chain containing {Sm2(COO)2} dinuclear units. The IR spectra and thermal stabilities of all compounds have been studied in detail. Compound 3 shows characteristic emission of Eu3+ ions, and it is noteworthy that the luminescent properties for 2 shows no emission peaks whereas that for 4 exhibits characteristic absorption bands of Sm3+ ions.CCDC: 1478487, 1478488, and 1478495
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