| Abstract: | The novel coordination polymer Pr(BYBA)3(H2O)2]·Pr(BYBA)3(H2O)] (BYBAH = 2-benzoylbenzoic acid) was yielded by hydrothermal synthesis, determined by single-crystal X-ray diffraction, and characterized by FT-IR and UV-Vis spectra. The crystal crystallizes in the triclinic system, space group P with a = 9.112(3), b = 14.644(5), c = 27.076(11) (A), α = 84.223(3), β = 87.816(4), γ = 88.902(4)o, V = 3592(2) (A)3, C84H60O21Pr2, Mr = 1687.14, Z = 2, F(000) = 1700, Dc = 1.560 g/cm3, μ = 1.419 mm-1, the final R = 0.0485 and wR = 0.1258 for 13035 observed reflections with I＞2((I). The compound contains two different building units, Pr2(BYBA)6(H2O)4] and Pr2(BYBA)6(H2O)2]. It is noticeable that Pr2(BYBA)6(H2O)4] is an isolated binuclear building block, in which the Pr3+ ion centers are both located in an eight-coordinated environment. However, in Pr2(BYBA)6(H2O)2] the Pr3+ ion centers are located in a nine-coordinated environment and connected by BYBA ligands to form 1D chains. |
