| Abstract: Two new coordination polymers [Zn(3-aba)2]n·nH2O
(1) and [Cd(3-aba)2]n (2) (3-aba=3-aminobenzoic acid anion) were synthesized and characterized by elemental analysis, thermal analysis, IR. Their crystal structures were determined by X-ray diffraction method. The crystal of complex
1 belongs to orthorhombic system with space group Pca21 and that of complex
2 belongs to monoclinic system with space group P21/n. The crystallographic data are: a=0.926 26(8) nm, b=1.600 73(15) nm, c=1.885 22(17) nm, β=90°, V=2.795 2(4)
nm3, Z=4, μ=1.783 mm-1, Dc=1.690 g·cm-3,
R1=0.027 9, wR2=0.064 8 for 1; a=0.900 68(7) nm, b=0.452 03(4) nm, c=1.568 02(12) nm, β=106.075 0(10)°, V=0.613 43(9)
nm3, Z=1, μ=1.799 mm-1, Dc=2.082 g·cm-3,
R1=0.019 8, wR2=0.055 8 for 2. In the complex 1, the 3-aminobenzoic acid anion coordinates to Zn(II) in a μ2-bridge mode with its nitrogen atom and one of its oxygen atoms, while it coordinates to Cd(II) ion in a μ3-bridge mode with its nitrogen atom and two oxygen atoms of the carboxylate in the complex
2. Both coordination polymers exhibit a two-dimensional network structure. CCDC: 292262,
1; 292263, 2. |
