Platinum(II) complexes with aryl tellurols and diaryl ditellurides: Syntheses and spectral investigations
作者:Bishan L. Khandelwal、Kalipada Kundu、Sushil K. Gupta
DOI:10.1016/s0020-1693(00)87511-8
日期:1988.8
[Pt(X)(TeC 6 H4OCH3 -4)(PPh 3 ) 2 ]. 1 H NMR shows that equimolar proportions of NaTeC 6 H 5 , NaTeC 6 H4OCH2CH3 -4 and cis -[PtCl 2 (PPh 3 ) 2 ] give a mixture of three complexes: II , Ar = C 6 H 5 ; II , Ar = 4-CH 3CH2OC 6 H4 ; and [Pt(TeC 6 H 5 )(TeC 6 H4OCH2CH3 -4)(PPh 3 ) 2 ]. Polymeric complexes [PtCl(TeAr)] n ( III ) and [Pt(TeAr) 2 ] n ( IV ) result from reaction between K 2 [PtCl
摘要从顺式-[PtCl 2(PPh)3)2]和[PtCl(TeAr)(PPh 3)2](I)和[Pt(TeAr)2(PPh 3)2](II)容易获得。室温下在乙醇苯中的NaTeAr(Ar = C 6 H 5,4-CH 3 OC 6 H 4和4-CH 3 CH 2 OC 6 H 4)。(I)和(II)的31 P NMR光谱表明它们在溶液中的反式构型。I(Ar = 4-CH 3 OC 6 H 4)和NaX(X = I,Br,SCN)之间的复分解反应在甲醇中发生,得到[Pt(X)(TeC 6 H 4 OCH 3 -4)(PPh 3 )2]。1 H NMR显示等摩尔比例的NaTeC 6 H 5,NaTeC 6 H 4 OCH 2 CH 3 -4和顺式-[PtCl 2(PPh 3)2]产生三种配合物的混合物:II,Ar = C 6 H 5 ; II,Ar = 4-CH 3 CH 2 OC 6 H 4;
Oxidation of uranium(<scp>iv</scp>) mixed imido–amido complexes with PhEEPh and to generate uranium(<scp>vi</scp>) bis(imido) dichalcogenolates, U(NR)<sub>2</sub>(EPh)<sub>2</sub>(L)<sub>2</sub>
作者:Neil C. Tomson、Nickolas H. Anderson、Aaron M. Tondreau、Brian L. Scott、James M. Boncella
DOI:10.1039/c9dt00680j
日期:——
provides a general route into bis(imido) U(VI) chalcogenolate complexes, circumventing the need to perform problematic salt metathesis reactions on U(VI) iodides. Investigation into the speciation of the U(IV) complexes that form prior to oxidation found a significant dependence on the identity of the ancillary ligands, with tBu2bpy forming the isolable imido–(bis)amido complex, U(NDipp)(NHDipp)2(tBu2bpy)2
这项工作提供了将U(IV)转化为U(VI)双(亚氨基)配合物的新途径,并提供了有关U(VI)化合物形成方式的新信息。通式U(NR)2(EPh)2(L)2(R = 2,6-二异丙基苯基,叔丁基; E = S,Se,Te; L = py,EPh)描述的系列中的许多化合物通过用Ph 2 E 2氧化原位生成的U(IV)酰胺基-酰亚胺基物质而合成。该合成序列为进入双(亚氨基)U(VI)硫族油酸酯复合物,从而避免了对U(VI)碘化物进行有问题的盐复分解反应的需要。对氧化前形成的U(IV)配合物的形态的研究发现,它对辅助配体的身份有很大的依赖性,t Bu 2 bpy形成了可分离的亚氨基-(双)酰胺基配合物,U(NDipp)(NHDipp) )2(t Bu 2 bpy)2。总之,这些数据与双(酰亚胺基)U(VI)基序的观点相符-非常像铀酰离子UO 2 2+ –是一种热力学吸收剂,当存在合适的亚氨基配位体残基时,简单的配体框架无法阻止铀掉入。
Synthesis of amphiphilic, chalcogen-based redox modulators with in vitro cytotoxic activity against cancer cells, macrophages and microbes
作者:Peng Du、Uma M. Viswanathan、Khairan Khairan、Tomislav Buric、Nathaniel E. B. Saidu、Zhanjie Xu、Benjamin Hanf、Inga Bazukyan、Armen Trchounian、Frank Hannemann、Ingolf Bernhardt、Torsten Burkholz、Britta Diesel、Alexandra K. Kiemer、Karl-Herbert Schäfer、Mathias Montenarh、Gilbert Kirsch、Claus Jacob
DOI:10.1039/c3md00204g
日期:——
Several amphiphilic, chalcogen-based redox modulators have been synthesized which exhibit a widespread, yet in some instances also selective, biological activity which is most likely based on their ability to modulate the intracellular redox balance and to interact with cellular membranes and specific proteins.
<i>O</i>-Glycosidation of Telluroglycoside by Electrochemical Oxidation
作者:Shigeru Yamago、Koji Kokubo、Jun-ichi Yoshida
DOI:10.1246/cl.1997.111
日期:1997.2
The electrochemical oxidation of telluroglycosides in the presence of primary or secondary alcohols results the O-glycosidation with high efficiency. Difference of the oxidation potential is nicely accounted for that of the reactivity of armed- and disarmed-telluroglycosides.
Photostimulated reactions of 1-iodoadamantane and iodobenzene with thiolate, selenate, and tellurate ions
作者:Sara M. Palacios、Rubén A. Alonso、Roberto A. Rossi
DOI:10.1016/s0040-4020(01)97190-x
日期:1985.1
The photostimulatedreaction of 1-iodoadamantane (1-IAd) with benzenethiolate ion gave the substitution product 1-adamantylphenylsulfide. With benzeneselenateion (PhSe−) it gave three products: diphenylselenide, 1-adamantylphenylselenide and di(l-adamantyl) selenide. With benzenetellurate ions it gave the substitution product 1-adamantylphenyltelluride and diphenyltelluride, the latter is ascribed