名称:
One-pot synthesis, characterization, DNA binding and enzymatic studies of 4-methyl trans-cinnamate zinc(II)-mixed ligand complexes
摘要:
Four new zinc(II) complexes formulated as [Zn(L)(2)] (1), [Zn(L)(2)(phen)] (2), [Zn(L)(2)(bipy)H2O] (3), and [Zn(en)(2)(H2O)(2)](L)(2)(H2O)(2) (4), where HL = 4-methyl trans-cinnamic acid, bipy = 2,2'-bipyridine, phen = 1,10-phenanthroline, and en = ethylenediamine, have been synthesized and characterized by FT-IR and NMR spectroscopy. Single-crystal XRD revealed distorted square-pyramidal structure for 3 and octahedral for 4. The complexes were screened for DNA interaction via viscommetry and UV-visible spectroscopy. The apparent binding constants were calculated to be 1.18 x 10(4), 1.26 x 10(5), 4.64 x 10(4), and 1.89 x 10(4) for 1-4, respectively. The binding propensity to salmon sperm DNA was in the order: K-2 > K-3 > K-4 > K-1. Furthermore, these complexes demonstrated efficient inhibition of alkaline phosphatase, which was attributed to the binding of zinc(II) to the enzyme's active site.