Synthesis, characterization, DNA interaction, antioxidant and anticancer activity of new ruthenium(II) complexes of thiosemicarbazone/semicarbazone bearing 9,10-phenanthrenequinone
摘要:
A new series of octahedral ruthenium(II) complexes supported by tridentate ligands derived from phenanthrenequinone and derivatives of thiosemicarbazide/semicarbazide and other co-ligands have been synthesized and characterized. DNA binding experiments indicated that ruthenium(II) complexes can interact with DNA through non-intercalation and the apparent binding constant value (K-b) of [RuCl(CO)(PPh3)(L-3)] (3) at room temperature was calculated to be 2.27 x 10(3) M-1. The DNA cleavage studies showed that the complexes have better cleavage of pBR 322 DNA. Antioxidative activity proved that the complexes have significant radical scavenging activity against free radicals. Cytotoxic activities showed that the ruthenium(II) complexes exhibited more effective cytotoxic activity against selected cancer cells. (C) 2013 Elsevier B.V. All rights reserved.
catalytic efficiency of the synthesized complexes was examined against N-arylation of imidazole. The system works well with the electron-rich, -neutral, and -deficient aryl halides to afford the products in good to excellent yields. Sterically congested aryl halides and heteroaryl halides have also been used as substrates to provide N-arylated heterocycles. In addition, this methodology can be applicable
Ruthenium(II) 9,10-phenanthrenequinone thiosemicarbazone complexes: synthesis, characterization, and catalytic activity towards the reduction as well as condensation of nitriles
作者:Panneerselvam Anitha、Periasamy Viswanathamurthi、Devarayan Kesavan、Ray Jay Butcher
DOI:10.1080/00958972.2014.977269
日期:2015.1.17
with O, N, and S as the donor sites and are in the thiol form in all the complexes. Catalytic studies showed that all the complexes displayed good catalytic activity towards the reduction of nitriles and also the condensation of nitriles with 2-aminoalcohol under solvent-free conditions. Graphical Abstract
配体 9,10-菲醌-N4-取代的缩氨基硫脲 (HL1-3) 及其钌 (II) 配合物被合成并通过元素和光谱方法表征。配体是三齿一元螯合配体,以 O、N 和 S 作为供体位点,并且在所有配合物中都是硫醇形式。催化研究表明,所有配合物对腈的还原以及腈与 2-氨基醇在无溶剂条件下的缩合均表现出良好的催化活性。图形概要
Rhodium(I) complexes containing 9,10-phenanthrenequinone-N-substituted thiosemicarbazone ligands: Synthesis, structure, DFT study and catalytic diastereoselective nitroaldol reaction studies
New rhodium(I) complexes [Rh(CO)(L)] (1–3) were prepared by the reaction of [RhCl(CO)(PPh3)2] with 9,10-phenanthrenequinone-N-substituted thiosemicarbazones (HL1-3) and characterized by elemental and spectral analyses (IR, UV–Vis, 1H and 13C NMR, ESI-Mass). The structure of the complex, [Rh(CO)(L1)] (1) has been established by single-crystal X-ray diffraction analysis. The structure has also been optimized
新铑(I)配合物的[Rh(CO)(L)](1 - 3)通过[的RhCl(CO)(PPH反应制备3)2 ]与9,10-菲醌-N-取代缩氨基硫脲(HL 1-3),并通过元素和光谱分析(IR,UV-Vis,1 H和13 C NMR,ESI-Mass)进行表征。配合物的结构[Rh(CO)(L 1)](1)是通过单晶X射线衍射分析确定的。还使用LANL2DZ基集通过DFT方法对结构进行了优化。在室温下,在离子液体存在下,合成的络合物用作苯甲醛与硝基乙烷的非对映选择性硝基羟醛反应的催化剂。发现优化的催化剂2在各种芳族醛和硝基烷之间的不对称亨利反应中是有效的。在多达五次催化运行中检查了催化剂的可重复使用性。结果表明收率略有损失,产物保留了非对映选择性。相信该方法为容易地合成大量非对映异构富集的β-硝基醇提供了机会。
Nickel(II) complexes containing ONS donor ligands: Synthesis, characterization, crystal structure and catalytic application towards C-C cross-coupling reactions
作者:PANNEERSELVAM ANITHA、RAJENDRAN MANIKANDAN、PARANTHAMAN VIJAYAN、GOVINDAN PRAKASH、PERIASAMY VISWANATHAMURTHI、RAY JAY BUTCHER
DOI:10.1007/s12039-015-0811-4
日期:2015.4
Sonogashira coupling reactions rather than Suzuki-Miyaura coupling. Nickel(II) complexes bearing 9,10-phenanthrenequinone N-substituted thiosemicarbazone ligands were synthesized and characterized. The X-ray crystal structure of the complexes revealed a distorted octahedral geometry around the metal centre. These nickelcomplexes exhibited better catalytic activity in Kumada-Corriu and Sonogashira
Synthesis, characterization, DNA interaction, antioxidant and anticancer activity of new ruthenium(II) complexes of thiosemicarbazone/semicarbazone bearing 9,10-phenanthrenequinone
A new series of octahedral ruthenium(II) complexes supported by tridentate ligands derived from phenanthrenequinone and derivatives of thiosemicarbazide/semicarbazide and other co-ligands have been synthesized and characterized. DNA binding experiments indicated that ruthenium(II) complexes can interact with DNA through non-intercalation and the apparent binding constant value (K-b) of [RuCl(CO)(PPh3)(L-3)] (3) at room temperature was calculated to be 2.27 x 10(3) M-1. The DNA cleavage studies showed that the complexes have better cleavage of pBR 322 DNA. Antioxidative activity proved that the complexes have significant radical scavenging activity against free radicals. Cytotoxic activities showed that the ruthenium(II) complexes exhibited more effective cytotoxic activity against selected cancer cells. (C) 2013 Elsevier B.V. All rights reserved.