| Abstract: The hydrothermal reaction of pyridine-3,4-dicarboxylic acid (pydcH2), 4,4′-bipyridine and GdCl3·6H2O yield a novel gadolinium coordination polymer {[Gd2(pydc)2(μ3-OH)2(H2O)2]·H2O}n(1). The compound was chara-cterized by elemental analysis, thermal analysis, IR spectra and single-crystal X-ray structure analysis. The crystal of the Gd(Ⅲ) complex belongs to triclinic system, space group P1 with: a=0.796 25(16) nm, b=0.944 46(19) nm, c=1.262 1(3) nm, α=76.50(3)°, β=84.95(3)°, γ=83.04(3)°, Z=2, V=0.914 4(3) nm3, Dc=2.669 g·cm-1, μ=7.269 mm-1, F(000)=692, and R1=0.033 3, wR2=0.062 3. The crystal structure revealed that compound 1 has a 2D layer structure incorporating 1D Gd-O-Gd double chain, and hydrogen bonding interactions result in the former of 3D supramolecular network structure. CCDC: 669079. |
