含NS和NNSS供电子原子的钌(Ⅲ)席夫碱配合物:催化性能和抗微生物活性(英文)

Catalytic and Antimicrobial Studies of Ruthenium(Ⅲ) Schiff Base Complexes Containing NS and NNSS Donor Atoms

通过[RuX_3(EPh_3)_3]或[RuBr_3(PPh_3)_3(MeOH)](式中X=Cl或Br;E=P或As)与适当的席夫碱以1∶1的物质的量的比反应合成了[RuX_2(L′)(EPh_3)_2]或[RuX(LL′)(PPh_3)](式中L′=席夫碱配体1,即[S-benzyl-β-N-(methyl,acetyl)methylenedithiocarbazate]; LL′=席夫碱配体6,即[Bis(S-benzyl-β-N-(methyl)methylenedithiocarbazate])2种类型的钌(Ⅲ)配合物。席夫碱配体1和6分别由Sbenzyldithiocarbazate(NH_2NHCSSCH_2C_6H_5)与2,3-butanedione以1∶1 and 1∶2的物质的量的比缩合反应而制得。用元素分析、光谱分析(IR、UV-Vis 和 EPR)和循环伏安法等对合成的席夫碱配合物进行了表征。结果表明合成的Ru(Ⅲ)配合物显顺磁性。初步建议所有的新合成的配合物均为八面体结构。用乙醛与H_2O_2作为探针反应对合成的Ru(Ⅲ)配合物的催化活性进行了评价。用4种细菌对席夫碱配体和由它们合成的Ru(Ⅲ)配合物的抗微生物活性进行了筛选。

Ruthenium（Ⅲ） complexes of the type [RuX2（L＇）（EPh3）2] and [RuX（LL＇）（EPh3）] （where, X=Cl or Br; E=P or As; L＇-Schiff base ligand 1 [S-benzyl-β-N-（methyl,acetyl）methylenedithiocarbazate], LL＇-Schiff base ligand 6 [Bis（S- benzyl-β-N-（methyl）methylenedithiocarbazate]） has been synthesized by the reactions of [RuX3（EPh3）3] or [RuBr3 （PPh3）2（MeOH）] with appropriate Schiff bases in 1：1 molar ratio. The Schiff base ligands （1 and 6） were prepared by condensing S-benzyldithiocarbazate （NH2NHCSSCH2C6H5） with 2,3-butanedione （1：1 and 1：2 molar ratio）. Complexes have been characterized by analytical, spectroscopic （IR, UV-Visible, and EPR） and Cyclic voltammetric methods. The ruthenium（Ⅲ） complexes are paramagnetic and an octahedral structure has been tentatively proposed for all the new complexes. Catalytic activity of these complexes has been explored by means of a probe reaction of the acetaldehyde with H2O2. The ligands and the complexes were screened for antimicrobial activity against four organisms.