C-H Activation from Iron(II)-Nitroxido Complexes.

ABSTRACT: 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 (^Ar L)Fe(κ¹ -TEMPO) and (^Ar L)Fe(κ² -N,O-AZADO) (^Ar L=1,9-(2,4,6-Ph₃ C₆ H₂ )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 (^Ar L)Fe(κ¹ -TEMPO) reacts to give a diferrous hydroxide [(^Ar L)Fe]₂ (μ-OH)₂ , the reaction of four-coordinate (^Ar L)Fe(κ² -N,O-AZADO) with

SUBMITTER: Kleinlein C 

PROVIDER: S-EPMC5672810 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature