Effect of lanthanide contraction on structures of 3D lanthanide organic frameworks from 5-nitroisophthalic acid and picolinic acid

作者: Jin-Ying Gao , Xia-Hua Xiong , Chu-Jun Chen , Wei-Ping Xie , Xing-Rui Ran

DOI: 10.1016/J.INOCHE.2013.02.002

关键词: CrystallographyPowder diffractionHydrothermal synthesisSupramolecular chemistryIsostructuralChemistryLigandInorganic chemistryPicolinic acidLanthanideLanthanide contraction

摘要: Abstract Two different types of novel lanthanide coordination polymers constructed from 5-nitroisophthalic acid, and picolinic acid as auxiliary ligand, namely, {[Ln 2 (nip) (pic) (H O)]} n (type I, Ln = Pr 1 , Nd Sm 3 Eu 4 H nip = 5-nitroisophthalic Hpic = picolinic acid), 5 O) ]·2H O} II, Ln = Tb Dy 6 Ho 7 Er 8 ), have been hydrothermally synthesized characterized by IR, elemental analysis, thermogravimetric analysis (TGA), single-crystal X-ray diffraction analyses powder (PXRD). Complexes – I) are isostructural the infinite 1D Sm-carboxylate chains bridged pia ligands to form 2D sheets, such sheets further united together generate a 3D supramolecular structure. II) Tb–carboxylate Furthermore, luminescence properties compounds also studied.

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