| Abstract: Reaction of FeCl2·6H2O/Ni(OAc)2·4H2O, pyridine-2,4,6-tricarboxylic acid (H3pyta), NaOH results in formation of a 1D Fe-pyta chain based coordination polymer [Fe3(pyta)2(H2O)8] (1), and another 2D coordination network [Ni3(pyta)2(abpt)2(H2O)3]·3H2O (2) with the auxiliary ligand 4-amino-3,5-bis(4-pyridyl)-1,2,4-triazole (abpt), both were characterized by elemental analysis and IR. X-ray diffraction crystal structure analysis shows that 1 crystallizes in monoclinic system, non-centrosymmetric space group Cc with a=1.970 2(3) nm, b=0.682 02(9) nm, c=1.948 1(2) nm, β=117.063(2)°, V=2.331 1(5) nm3, Z=8; and 2 crystallizes in monoclinic system, space group P21/c with a=1.785 19(18) nm, b=0.725 14(8) nm, c=2.072 5(2) nm, β=112.574(2)°, V=2.477 3(4) nm3, Z=4. In complex 1, the Fe atoms are connected by μ2- and μ4-pyta3- ligands to form a 1D Fe-pyta chain with rhombic cores along the c-axis. While in complex 2, the pyta3- ligands adopt μ2-bridging mode to link the Ni atoms to linear trinuclear [Ni3(pyta)2] units, which are further connected to form 2D (4,4) coordination players by the auxiliary bridging ligand abpt. CCDC: 665831, 1; 709969, 2. |
