Salphen metal complexes as tunable G-quadruplex binders and optical probes
作者:Nurul H. Abd Karim、Oscar Mendoza、Arun Shivalingam、Alexander J. Thompson、Sushobhan Ghosh、Marina K. Kuimova、Ramon Vilar
DOI:10.1039/c3ra44793f
日期:——
A series of seven new metal complexes (metal = NiII, CuII, PtII and VO2+) with substituted salphen ligands have been prepared and their duplex and G-quadruplex DNA affinities determined. The selectivity of the complexes towards a given DNA topology is dictated by several factors including geometry, overall charge and substitution pattern of the complex. We also show that the two platinum(II)–salphen complexes developed as part of this series are emissive. Confocal microscopy studies were carried out with these two complexes using four different cell lines (CHO, HeLa, U2OS and HepG2). These studies showed that the cell permeability and localization are different for the two probes and highly dependent on the cell line used.
Novel vanadium coordination compounds have been synthesized. Both compounds exhibit intense photoluminescence emission and showin vivoantidiabetic activity.
新型钒配位化合物已经合成。这两种化合物均表现出强烈的光致发光发射,并显示出体内抗糖尿病活性。
Spectroscopic studies, thermal analyses and biological evaluation of new V(IV), Zr(IV) and U(VI) moxifloxacin complexes
作者:Sadeek A. Sadeek、Walaa H. El-Shwiniy、Wael A. Zordok、Essam Kotb
DOI:10.1016/j.molstruc.2011.09.009
日期:2011.12
and [UO2(MOX)3](NO3)2·3H2O formed in the interaction of moxifloxacin (MOX) with VOSO4·H2O, ZrOCl2·8H2O and UO2(NO3)2·6H2O in methanol and acetone as a solvents at room temperature were reported. The isolated solid complexes have been characterized with melting points, elemental analysis, molar conductance, magnetic moments studies, spectral (UV–Visible, IR and 1HNMR) as well as thermal analyses (TGA
First Row Transition Metal(II) Thiocyanate Complexes, and Formation of 1-, 2-, and 3-Dimensional Extended Network Structures of M(NCS)<sub>2</sub>(Solvent)<sub>2</sub>(M = Cr, Mn, Co) Composition
作者:Endrit Shurdha、Curtis E. Moore、Arnold L. Rheingold、Saul H. Lapidus、Peter W. Stephens、Atta M. Arif、Joel S. Miller
DOI:10.1021/ic401558f
日期:2013.9.16
The reaction of first row transition MII ions with KSCN in various solvents form tetrahedral (NMe4)2[MII(NCS)4] (M = Fe, Co), octahedral trans-MII(NCS)2(Sol)4 (M = Fe, V, Ni; Sol = MeCN, THF), and K4[MII(NCS)6] (M = V, Ni). The reaction of M(NCS)2(OCMe2)2 (M = Cr, Mn) in MeCN and [Co(NCMe)6](BF4)2 and KSCN in acetone and after diffusion of diethyl ether form M(NCS)2(Sol)2 that structurally differ as
第一行跃迁M II离子与KSCN在各种溶剂中的反应形成四面体(NMe 4)2 [M II(NCS)4 ](M = Fe,Co),八面体反式-M II(NCS)2(Sol)4(M = Fe,V,Ni; Sol = MeCN,THF)和K 4 [M II(NCS)6 ](M = V,Ni)。M(NCS)2(OCMe 2)2(M = Cr,Mn)在MeCN和[Co(NCMe)6 ](BF 4)2和KSCN在丙酮中的反应以及乙醚扩散后的反应形式为M(NCS)2(Sol)2,它们在结构上有所不同,因为它们形成一维(1-D)(M = Co; Sol = THF),二维(2-D)(M = Mn; Sol = MeCN)和三维-尺寸(3-D)(M = Cr; Sol = MeCN)扩展结构。1-D Co(NCS)2(THF)2具有反式-THF,而乙腈具有2-和3-DM(NCS)2(NCMe)2(M = C
Copper colloids stabilized by water-soluble polymers
作者:E.R. Savinova、E.N. Savinov、V.N. Parmon
DOI:10.1016/0304-5102(88)85008-9
日期:1988.11
dihydrogen evolution from acidic aqueoussolutions of strong one-electron reductants Vaq2+ and the cation radical of methylviologen (MV+.) in the presence of polymer-stabilized copper colloids was studied. This process could be described quantitatively in the framework of an electrochemical ‘microelectrode’ model. The standard heterogeneous rate constant of proton reduction on finely dispersed copper was
研究了在聚合物稳定的铜胶体存在下,强酸性单电子还原剂V aq 2+和甲基紫精(MV +。)的阳离子从酸性水溶液中催化生成二氢的动力学。该过程可以在电化学“微电极”模型的框架中进行定量描述。确定了在细分散的铜上质子还原的标准异质速率常数,发现当铜颗粒的尺寸从150减小到25时,其值会急剧下降。