【摘 要】
：
Three novel lanthanide-IN coordination polymers [Ln(IN)3(H2O)2]n (Ln = Sm 1,Dy 2, Eu 3; IN = isonicotinate) have been hydrothermally synthesized and characteriz
【机 构】
：
State Key Laboratory of Structural Chemistry,Department of Applied Chemistry
【基金项目】
：
福建省自然科学基金;国家自然科学基金;中国科学院基金
论文部分内容阅读
Three novel lanthanide-IN coordination polymers [Ln(IN)3(H2O)2]n (Ln = Sm 1,Dy 2, Eu 3; IN = isonicotinate) have been hydrothermally synthesized and characterized by FT-IR spectra, elemental analysis and TG analysis. Single-crystal X-ray diffraction shows that 1, 2 and 3are isostructural. Crystal data for 1: monoclinic, space group C2/c, a = 15.8384(14), b = 14.2662(12), c = 9.5073(7)(A), β = 97.705(4)°, V = 2128.8(3) (A)3, Z = 4, Dc = 1.724 g/cm3, F(000) = 1084, μ= 2.806 mm-1 and R = 0.0226; Crystal data for 2: monoclinic, space group C2/c, a = 15.7890(3), b = 14.1356(6), c = 9.5152(3) (A), β = 97.899(2)°, V = 2103.52(12) (A)3, Z = 4, Dc = 1.784 g/cm3, F(000)= 1100, μ = 3.601 mm-1 and R = 0.0406; Crystal data for 3: monoclinic, space group C2/c, a =15.802(5), b = 14.242(4), c = 9.513(3) (A), β = 97.695(5)°, V = 2121.8(10) (A)3, Z = 4, Dc = 1.735g/cm3, F(000) = 1088, μ = 3.004 mm-1 and R = 0.0273. In the three compounds, the Ln(Ⅲ) centers are eight-coordinated with antiprismatic geometry. The Ln(IN)3(H2O)2 unit connects mutually to form a one-dimensional double zigzag chain via isonicotinate oxygen bridging. The infinite chains are further linked by inter-chain hydrogen-bonding to form a three-dimensional supramolecular network.
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