Abstract:

A new lanthanideorganic framework [Pr(2,5-pdc)(OH)(H₂O)₂］·H₂O was synthesized under hydrothermal conditions and characterized by elemental analysis, IR spectrometry and single crystal X-ray diffraction. X-ray diffraction analyses reveal that the title complex was crystallized in a monoclinic space group P2₁/c, with a=0.935 0(4) nm, b=1.615 8(6) nm, c=0.830 9(3) nm, α=γ=90.000°, β=94.078(7)°, V=1.252 1(9) nm3, Z=4. The complex possesses binuclear units constructed via OH- bridging, and the binuclear units are further connected by carboxyl oxygen atoms of 2,5-pdc ligands to form a 3D framework.

Key words: praseodymium (Ⅲ) coordination polymer, pyridine-2,5-dicarboxylic acid, 3D structure, hydrothermal synthesis