| Abstract: By using hydrothermal method, two lanthanum-tartrate complexes, [La(TTA)(OA)0.5(H2O)]·2H2O (1) and [La2(TTA)3(H2O)4]·H2O (2), were obtained with cooperation of different Ag(Ⅰ) complexes. The complexes were cha-racterized by elemental analysis and X-ray crystal structure determination. The crystal structures show that the complex 1 crystallizes in monoclinic, space group P21/c with a=0.610 71(10) nm, b=0.769 62(12) nm, c=2.270 2(3) nm, β=91.645(2)°, V=1.066 6(3) nm3, Z=4, Dc=2.385 g·cm-3, F(000)=732, μ=4.058 cm-1, the final R=0.048 5, wR =0.103 5. While the complex 2 crystallizes in triclinic, space group P1 with a=0.613 08(11) nm, b=0.745 8(1) nm, c=1.245 7(2) nm, α=74.662(1)°, β=88.835(3)°, γ=89.304(2)°, V=0.549 16(16) nm3, Z=1, Dc=2.456 g·cm-3, F(000)=392, μ=3.951 cm-1, the final R=0.052 0, wR=0.088 7. In complex 1, oxidative cleavage was found and the resulted oxalic acid served as bridging-ligand to link the 2D layers of doubled-(6,3) topology to give a porous 3D framework. The complex 2 has similar 2D network with that in 1, but no cleavage is found. The 2D networks in 2 are further linked into 3D framework by other tartrate ligands with different coordination mode. CCDC: 705232, 1; 705233, 2. |
