A new Zn(Ⅱ) complex, [Zn(L)_2(phen)(H_2O)](1, HL = N-acetyl-L-phenylalanine, phen = 1,10-phenanthroline) has been synthesized and characterized by elemental analysis, IR and X-ray single-crystal diffraction analysis. The Zn(Ⅱ) complex belongs to monoclinic, space group P21 with a = 12.6749(13), b = 5.5965(6), c = 22.985(2) ?, β = 104.296(2)°, V = 1580.0(3) ?~3, Z = 2, M_r = 676.02, D_c = 1.421 μg·m^(-3), μ = 0.833 mm^(-1), F(000) = 704, and the final R = 0.0460, wR = 0.0899 for 4422 observed reflections with I > 2σ(I). The molecules form a 1D chained structure by hydrogen bonds. The antitumor activities of Zn(Ⅱ) complex against human hepatoma SMMC-7721 cells, human lung adenocarcinoma A549 cells and human colon carcinoma WiDr cells have also been investigated.
A novel Ca(Ⅱ) coordination polymer,[Ca L_(2)(H_(2)O)_(2)]_(n) (1,HL=4-acetylphenoxyacetic acid) has been synthesized with 4-acetylphenoxyacetic acid,Ca(ClO_4)_(2)·4H_(2)O and Na OH as raw materials.Complex 1 was characterized by elemental analysis and single-crystal X-ray diffraction analysis.The results show that the Ca(Ⅱ)ion is eight-coordinated in a distorted triangular dodecahedral geometric configuration with six carboxylate Oatoms of four L ligands and two O atoms of two coordinated water molecules.Complex 1 forms a one-dimensional chained structure by the bridging effect of carboxylate O atoms.The antitumor activity of HLligand and complex 1 has also been investigated.
A new Na(I) coordination polymer,[Na2(Hpimdc)(H2 pimdc)(phen)2]n(1), has been synthesized by the reaction of NaOH with 2-propyl-4,5-imidazoledicarboxylic acid(H3 pimdc)and 1,10-phenanthroline(phen). The Na(I) coordination polymer 1 was characterized by single-crystal X-ray diffraction analysis and elemental analysis. In 1, the bridged ligand H3 pimdc adopts two modes(singly deprotonated and doubly deprotonated) to coordinate with the Na(I) ion.The Na(1) ion is six-coordinated with three N atoms from a phen ligand and a H2 pimdc ligand,three O atoms from a Hpimdc ligand and two other different H2 pimdc ligands. The Na(2) ion is also six-coordinated with three N atoms from a phen ligand and a Hpimdc ligand, three O atoms from a H2 pimdc ligand and other two different Hpimdc ligands. Complex 1 exhibits a 1 D chain structure built up by μ-H2 pimdc-and μ-Hpimdc2-ligands. The antitumor activities of complex 1 against human SGC7901, A549 and H08910 cells have been tested.
A novel Zn(Ⅱ) complex, [ZnL_2(H_2O)_4]·H_2O(1, HL = 2-(nicotinoyloxy)acetic acid), was synthesized using Zn(OAc)_2·2H_2O and 2-(nicotinoyloxy)acetic acid as raw materials. Its structure has been elucidated by elemental analysis, IR and single-crystal X-ray diffraction. The structural analysis revealed that complex 1 crystallizes in triclinic, space group P1 and the Zn(Ⅱ) atom is six-coordinated with two N atoms from two different 2-(nicotinoyloxy)acetate anion ligands and four O atoms from coordinated water molecules. Complex 1 forms a 3D network structure by O–H···O hydrogen bonds. The antitumor activities of 2-(nicotinoyloxy)acetic acid ligand and its Zn(Ⅱ) complex were evaluated against human lung adenocarcinoma A549 cells, human hepatoma SMMC-7721 cells and human colon carcinoma Wi Dr cells.
