Synthesis, Crystal Structures and Antibacterial Activities of Two Complexes of Zn(II)/Cd(II) Assembled by 4-Carboxymethoxycinnamic Acid Ligand

Two Zn(II)/Cd(II) complexes, [Zn(CMOPAA)( Phen)(H2O)](n) (1) and [Cd(CMOPAA)(Phen)](n) ( 2), (H(2)CMOPAA = 4.carboxymethoxy-3-phenylpropenoate and Phen=1,10-phenanthroline) were synthesized with H(2)CMOPAA ligand by solvothermal condition and structurally characterized by element analysis, IR, TGA (thermogravimetric analysis) and single crystal X-ray diffraction. Complex 1 crystalizes in the monoclinic system, space group P2(1)/ n with a= 0.698 84(8) nm, b=1.751 16(19) nm, c=1.655 49(18) nm, beta=95.165(10)degrees, V=2.017 7(4) nm(3). The asymmetric unit of complex 1 consists of one Zn(II)ion, one CMOPAA2- ligand, one Phen ligand and one coordinated H2O. Zn(II) ion is a six-coordinated distorted octahedral configuration. The carboxyl group of CMOPAA(2-) ligand connects the adjacent zinc ions to form a helical one-dimensional chain. Hydrogen bonds link the adjacent one.dimensional chains to form a two.dimensional network. Complex 2 crystalizes in the triclinic system, space group P1 with a=0.988 28( 16) nm, b = 1.040 08(17) nm, c=1.096 15(18) nm, alpha=72.213(2)degrees, beta= 74.439(2)degrees, gamma=71.265(2)degrees, V= 0.997 8(3) nm(3). The asymmet. ric unit of complex 2 consists of one Cd(II) ion, one CMOPAA(2-) ligand and one Phen ligand. Cd(II) ion is a seven. coordinated twisted single.cap triangular prism configuration. The carboxyl group of CMOPAA(2-) ligand connects the adjacent cadmium ions to form a parallelogram 26.membered large ring structure. The 26.membered large rings are linked to a one.dimensional band. like structure. The thermal stabilities and antibacterial activities of complexes 1 and 2 were studied. CCDC: 2054460, 1; 2068057, 2.