My watch list  

C‐H Activation from Iron(II)‐Nitroxido Complexes

The reaction of nitroxyl radicals TEMPO (2,2',6,6'‐tetramethylpiperidinyloxyl) and AZADO (2‐azaadamantane‐N‐oxyl) with an iron(I) synthon affords iron(II) nitroxido complexes (ArL)Fe(κ1‐TEMPO) and (ArL)Fe(κ2‐N,O‐AZADO) (ArL = 1,9‐(2,4,6‐Ph3C6H2)2‐5‐mesityldipyrromethene). Both high‐spin iron(II) nitroxido species are stable in the absence of weak C‐H bonds, but decay via N‐O bond homolysis to ferrous or ferric iron hydroxides in the presence of 1,4‐cyclohexadiene. Whereas (ArL)Fe(κ1‐TEMPO) reacts to give a diferrous hydroxide [(ArL)Fe]2(µ‐OH)2, the reaction of four‐coordinate (ArL)Fe(κ2‐N,O‐AZADO) with hydrogen atom donors yields ferric hydroxide (ArL)Fe(OH)(AZAD). Mechanistic experiments reveal saturation behavior in C‐H substrate and are consistent with rate‐determining hydrogen atom transfer.

Authors:   Theodore Alexander Betley, Claudia Kleinlein, Andrew J Bendelsmith, Shao-Liang Zheng
Journal:   Angewandte Chemie
Year:   2017
Pages:   n/a
DOI:   10.1002/ange.201706594
Publication date:   02-Aug-2017
More about Angewandte Chemie
  • News

    Hard Single-Molecule Magnets

    Magnets formed from a single molecule are of particular interest in data storage, since the ability to store a bit on every molecule could vastly increase the storage capacity of computers. Researchers have now developed a new molecular system with a particular magnetic hardness. The ingred ... more

    Cheaper Hydrogen Production

    Electrolytic hydrogen production powered by renewable energy is seen as an environmentally friendly means to ameliorate global climate and energy problems. In the journal Angewandte Chemie, a research team has now introduced a novel and inexpensive material for electrodes that may provide f ... more

    Overcoming False Optical Activity

    Many natural products are complicated organic molecules. Despite this complexity, scientists are usually able to investigate them using spectroscopic techniques. However, a team of researchers has now discovered that care should be taken using Raman spectroscopy to analyze certain chiral mo ... more

More about Wiley
Your browser is not current. Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE