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A new lanthanum complex,(H3O)2[La(C7H3NO5)2(H2O)2]2·3(H2O) or (H3O)2[La(HChel)2(H2O)2]2·3(H2O) 1 (H3Chel=4-hydroxypyridine-2,6-dicarboxylic(chelidamic) acid),has been prepared by the hydrothermal reaction,and its crystal structure was determined based on single-crystal diffraction data. Compound 1 crystallizes in triclinic,space group P1 with a=9.6939(19),b=10.176(2),c=11.502(2),α=111.52(3),β=93.74(3),γ=103.33(3)o,V=1013.0(3) 3,Dc=1.912 g/cm3,Z=1,Mr=1166.40,μ=2.188 mm-1,λ(MoKα)=0.71073 and F(000)=574. The final R=0.0342 and wR=0.0737 for 4080 observed reflections with I > 2σ(I),and R=0.0429 and wR=0.0772 for all data. Compound 1 contains two lanthanum ions,four chelidamic acid ligands,four coordinated water molecules,two hydroniums,and three discrete water molecules. The LaIII atom is ten-coordinated by four oxygen and two nitrogen atoms from two tridentate chelating chelidamic acid ligands,two carboxylic oxygen atoms from an adjacent chelidamic acid ligand and two coordinated water molecules,leading to a distorted dodecahedral geometry. A three-dimensional network is formed by H-bonds.
A new lanthanum complex, (H3O) 2 [La (C7H3NO5) 2 (H2O) 2] 2 .3 H2O or H3O 2 [La (HChel) 2 (H2O) 2] H3Chel = 4-hydroxypyridine-2,6-dicarboxylic (chelidamic) acid), has been prepared by the hydrothermal reaction, and its crystal structure was determined based on single-crystal diffraction data. Compound 1 crystallizes in triclinic, space group P1 with a = 9.6339 (19), b = 10.176 (2), c = 11.502 (2) , α = 111.52 (3), β = 93.74 (3), γ = 103.33 (3) o, V = 1013.0 3, Dc = 1.912 g / cm3, Z = 1, Mr = 1166.40, μ = 2.188 mm- 1, λ (MoKα) = 0.71073 and F (000) = 574. The final R = 0.0342 and wR = 0.0737 for 4080 Observed reflections with I> 2σ (I), and R = 0.0429 and wR = 0.0772 for all data. Compound 1 contains two lanthanum ions, four chelidamic acid ligands, four coordinated water molecules, two hydroniums, and three discrete water molecules. atom is ten-coordinated by four oxygen and two nitrogen atoms from two tridentate chelating chelidamic acid ligands, two carboxylic oxygen atoms from an adjacent chelidamic acid ligand and two c oordinated water molecules, leading to a distorted dodecahedral geometry. A three-dimensional network is formed by H-bonds.