Structure-reactivity relations for thiol-disulfide interchange
作者:Janette Houk、George M. Whitesides
DOI:10.1021/ja00256a040
日期:1987.10
di- and trithiols and the disulfides derived from either 2-mercaptoethanol or dithiothreitol. Reactions were conducted in methanol-d,/aqueous buffer (pH 7) or methanold, at 25 "C, using NMR spectroscopy to follow the reactions. These data were used to rank the dithiols in terms of reduction potential and to infer the structure of the disulfides formed from them on oxidation. There is a general correlation
We report the synthesis and the characterization of a trinuclear nickelcomplex. Solid state and solution studies using X-ray diffraction, NMR and UV-vis spectroscopy highlight the square planar geometries around the metal centers and an all-sulfur coordination sphere. It exhibits significant electrocatalytic activity for hydrogen evolution in DMF using Et3NHCl as the proton source. DFT studies suggest
Controlling carbon monoxide binding at di-iron units related to the iron-only hydrogenase sub-site
作者:Fenfen Xu、Cédric Tard、Xiufeng Wang、Saad K. Ibrahim、David L. Hughes、Wei Zhong、Xirui Zeng、Qiuyan Luo、Xiaoming Liu、Christopher J. Pickett
DOI:10.1039/b712805c
日期:——
Carbon monoxide binding by displacement of a pendant hemi-labile ligand at a di-iron site can be substantially ‘switched-on’ via a ligand protonation pathway which is competitive with metal-metal bond protonation.
{2Fe3S} clusters related to the di-iron sub-site of the H-centre of all-iron hydrogenases
作者:Mathieu Razavet、Sian C. Davies、David L. Hughes、Christopher J. Pickett
DOI:10.1039/b102244j
日期:——
The first synthetic 2Fe3S} clusters structurally
related to the sub-site of the H-centre of the all-iron hydrogenases are
described: tripodal dithiolate thioether ligands allow the synthesis of
di-iron pentacarbonyls with differential (2∶3) S ligation of the Fe
atoms.
首次合成的2Fe3S}簇在结构上与全铁氢化酶的 H-中心子位点有关:三元二硫醇硫醚配体可以合成二铁五羰基,铁原子上有不同的 (2∶3) S 键合。
Electropolymeric materials incorporating subsite structures related to iron-only hydrogenase: active ester functionalised poly(pyrroles) for covalent binding of {2Fe3S}-carbonyl/cyanide assemblies
作者:Saad K. Ibrahim、Xiaoming Liu、C?dric Tard、Christopher J. Pickett
DOI:10.1039/b617399c
日期:——
We report the assembly of the first electropolymeric materials incorporating catalytic diiron subsites related to those of the iron-only hydrogenases.