Copper(<scp>ii</scp>) complexes of functionalized 2,2′:6′,2′′-terpyridines and 2,6-di(thiazol-2-yl)pyridine: structure, spectroscopy, cytotoxicity and catalytic activity
作者:Katarzyna Czerwińska、Barbara Machura、Slawomir Kula、Stanisław Krompiec、Karol Erfurt、Catarina Roma-Rodrigues、Alexandra R. Fernandes、Lidia S. Shul'pina、Nikolay S. Ikonnikov、Georgiy B. Shul'pin
DOI:10.1039/c7dt01244f
日期:——
copper(II) complexes of 2,2′:6′,2′′-terpyridine and 2,6-di(thiazol-2-yl)pyridine derivatives towards human colorectal (HCT116) and ovarian (A2780) carcinoma as well as towards lung (A549) and breast adenocarcinoma (MCF7) cell lines was examined. Complex 1 and complex6 were found to have the highest antiproliferative effect on A2780 ovarian carcinoma cells, particularly when compared with complex2, 3
The electronic effects of ligands on metal-coordination geometry: a key role in the visual discrimination of dimethylaminopyridine and its application towards chemo-switch
作者:Weiwei Fang、Cong Liu、Jiangbo Chen、Zhengwei Lu、Zhi-Ming Li、Xiaoling Bao、Tao Tu
DOI:10.1039/c5cc00196j
日期:——
Visual discrimination of p-DMAP has been demonstrated by alternation of the geometry of Cu(ii)–terpyridine complexes after selective ligand coordination, and their feasibility towards chemo-switch has also been realized.
Copper(II) Complexes of 2,2′:6′,2″‐Terpyridine Derivatives for Catalytic Aerobic Alcohol Oxidations – Observation of Mixed‐Valence Cu
<sup>I</sup>
Cu
<sup>II</sup>
Assembles
作者:Guoqi Zhang、E Liu、Chengxiong Yang、Li Li、James A. Golen、Arnold L. Rheingold
DOI:10.1002/ejic.201403140
日期:2015.2
solutions of tpy derivatives with copper dichloride. Two new complexes with interesting solid-state structures resulting from these reactions have been isolated and characterized. The coordination reactions in the presence of TEMPO led to new mixed-valence CuICuII supramolecular assembles (4 and 5), although they adopt either discrete complex or 1D polymeric structures. Further catalytic studies indicated
铜 (II) 盐与简单的三联吡啶 (tpy) 配体反应得到单核单配体配合物 1-3,其中两个新结构已通过 X 射线晶体学表征。在2,2,6,6-四甲基哌啶基-1-氧基(TEMPO)存在下,这些配合物被用作在空气中将苯甲醇氧化成苯甲醛的催化剂。铜配合物 1 和 2 是在 70 °C 水中以 4-二甲氨基吡啶 (DMAP) 作为额外碱进行反应的有效催化剂。通过将TEMPO引入tpy衍生物与二氯化铜的反应溶液中,初步研究了TEMPO对催化反应过程中新反应中间体形成的影响。已经分离并表征了由这些反应产生的具有有趣固态结构的两种新配合物。TEMPO 存在下的配位反应导致了新的混合价 CuICuII 超分子组装(4 和 5),尽管它们采用离散复合物或一维聚合物结构。进一步的催化研究表明,在较温和的条件下,混合价组装 4 和 5 显示出比单核配合物更高的催化活性。在所得结果的基础上讨论了不同铜配合物的分
Selective and Cooperative Ligand Binding to Antiparallel Human Telomeric DNA G-Quadruplexes
particularly important to conceive molecules with specific effects on gene expression or telomere maintenance, or conceive structure‐specific molecular probes. Using electrospray massspectrometry in native conditions, we reveal a highly cooperative and selective 2:1 binding of CuII‐tolylterpyridine complexes to humantelomeric G‐quadruplexes. Circulardichroism and comparisons of affinities for different
Spectroscopic studies on the interaction of terpyridine-CuCl<sub>2</sub> with cysteine
作者:Xiyuan Zhou、Zeng Huang、Yuan Cao、Shanshan Yu、Xiaoqi Yu、Gang Zhao、Lin Pu
DOI:10.1039/c5ra08234j
日期:——
Interaction of the classical coordination complex TpyCuCl2 (Tpy = terpyridine) with cysteine was studied. Addition of cysteine to the solution of TpyCuCl2 was found to give greatly enhanced fluorescence.