Cd(Ⅱ), Co(Ⅱ), Cu(Ⅱ) and Zn(Ⅱ) complexes(1~4) based on 2-(2-pyridyl)benzimidazole(pbm) and 4,4'-oxybisbenzoic acid(H2odc) were synthesized. The formulas of these complexes are [Cd(pbm)(odc)2](1), [Co(pbm)(odc)2...Cd(Ⅱ), Co(Ⅱ), Cu(Ⅱ) and Zn(Ⅱ) complexes(1~4) based on 2-(2-pyridyl)benzimidazole(pbm) and 4,4'-oxybisbenzoic acid(H2odc) were synthesized. The formulas of these complexes are [Cd(pbm)(odc)2](1), [Co(pbm)(odc)2](2), [Cu(pbm)(odc)2](3) and [Zn(pbm)(odc)2](4) confirmed by single-crystal X-ray diffraction analysis, which shows that complexes 1, 2 and 4 belong to monoclinic system with space group P21/n, while complex 3 belongs to monoclinic system with space group P21/c. The binding properties of complexes 1~4 with CT-DNA are evaluated by ultraviolet spectrum, fluorescence spectra and viscosity measurements. The results indicate that complexes 1~4 have strong interaction with CT-DNA binding. These complexes exhibit an electrostatic or groove mode in respect of binding with DNA, which can effectively destroy DNA. And this binding mode may be applied to the interaction between the complexes and cancer cell DNA. Therefore, we hope to provide a theoretical and scientific basis for the research of anti-cancer drugs.展开更多
Complexes[Zn(pbm)(5-hip)_(3)](1),[Zn(pbm)(5-nip)3](2),[Mn(pbm)(H_(3)btc)_(2)(H_(2)O)](3)and[Mn(pbm)(5-nip)_(3)](4),where H2HIPA=5-hydroxyisophthalic acid,H2nip=5-nitroisophthalic acid,H3btc=tri-mesic acid and pbm(pyri...Complexes[Zn(pbm)(5-hip)_(3)](1),[Zn(pbm)(5-nip)3](2),[Mn(pbm)(H_(3)btc)_(2)(H_(2)O)](3)and[Mn(pbm)(5-nip)_(3)](4),where H2HIPA=5-hydroxyisophthalic acid,H2nip=5-nitroisophthalic acid,H3btc=tri-mesic acid and pbm(pyridine benzene chelate material)=2-(2-pyridyl)benzimidazole,were identified via sin-gle-crystal XRD analyses.1,2 and 4 pertain to the monoclinic space group C2/c,while 3 belongs to the triclinic space group P1.The interplay of CT-DNA with those complexes was delineated using ultraviolet,fluorescence,and circular dichroism(CD)spectroscopy and viscosity measurements.Complexes 1,2,3 and 4 interact with CT-DNA in an electrostatic or grooving mode.We wish to offer a theory-wise foundation for developing anti-tumor medi-cines.展开更多
文摘Cd(Ⅱ), Co(Ⅱ), Cu(Ⅱ) and Zn(Ⅱ) complexes(1~4) based on 2-(2-pyridyl)benzimidazole(pbm) and 4,4'-oxybisbenzoic acid(H2odc) were synthesized. The formulas of these complexes are [Cd(pbm)(odc)2](1), [Co(pbm)(odc)2](2), [Cu(pbm)(odc)2](3) and [Zn(pbm)(odc)2](4) confirmed by single-crystal X-ray diffraction analysis, which shows that complexes 1, 2 and 4 belong to monoclinic system with space group P21/n, while complex 3 belongs to monoclinic system with space group P21/c. The binding properties of complexes 1~4 with CT-DNA are evaluated by ultraviolet spectrum, fluorescence spectra and viscosity measurements. The results indicate that complexes 1~4 have strong interaction with CT-DNA binding. These complexes exhibit an electrostatic or groove mode in respect of binding with DNA, which can effectively destroy DNA. And this binding mode may be applied to the interaction between the complexes and cancer cell DNA. Therefore, we hope to provide a theoretical and scientific basis for the research of anti-cancer drugs.
文摘Complexes[Zn(pbm)(5-hip)_(3)](1),[Zn(pbm)(5-nip)3](2),[Mn(pbm)(H_(3)btc)_(2)(H_(2)O)](3)and[Mn(pbm)(5-nip)_(3)](4),where H2HIPA=5-hydroxyisophthalic acid,H2nip=5-nitroisophthalic acid,H3btc=tri-mesic acid and pbm(pyridine benzene chelate material)=2-(2-pyridyl)benzimidazole,were identified via sin-gle-crystal XRD analyses.1,2 and 4 pertain to the monoclinic space group C2/c,while 3 belongs to the triclinic space group P1.The interplay of CT-DNA with those complexes was delineated using ultraviolet,fluorescence,and circular dichroism(CD)spectroscopy and viscosity measurements.Complexes 1,2,3 and 4 interact with CT-DNA in an electrostatic or grooving mode.We wish to offer a theory-wise foundation for developing anti-tumor medi-cines.
