Synthesis, characterization and crystal structures of new coordination polymers of cerium(III) and samarium(III) containing 2,6-pyridinedicarboxylic acid

چکیده مقاله

The reaction of 2,6-pyridinedicarboxylic acid (1, LH₂) with CeCl₃·7H₂O and Sm(NO₃) ₃·6H₂O in the presence of triethylamine led to the coordination polymer complexes [M(L)(LH)(H₂O)₂] ·4H₂O [M = Ce (2) and Sm (3)]. Both complexes were characterized by elemental analyses, IR spectroscopy and the crystal structures of 2 and 3. Crystal data for 2 at -80°C: monoclinic, space group P2 ₁/c, a = 1404.6(1), b = 1122.1(1), c = 1296.1(1) pm, β = 102.09(1)°, Z = 4, R₁ = 0.0217 and for 3 at -80°C: monoclinic, space group P2₁/c, a = 1395.1(1), b = 1120.1(1), c = 1282.8(1) pm, β = 102.71(1)°, Z = 4, R₁ = 0.019. © 2005 Wiley-VCH Verlag GmbH & Co. KGaA.