The Fe(TPA) (TPA = tris(pyridyl-2-methyl)amine) class of non-haem Fe catalysts is proposed to carry out selective hydrocarbon oxidations through the generation of high-valent iron species. Using ambient mass spectrometry, we obtain direct evidence for the formation of an Fe(O)(OH) species under catalytic conditions. In addition, O-labelling suggests that this Fe(O)(OH) species serves as the active oxidant in hydrocarbon oxidation catalysis.
Representing the electrodynamics of relativistically drifting particle
ensembles in discrete, co-propagating Galilean coordinates enables the
derivation of a Particle-in-Cell algorithm that is intrinsically free of the
Numerical Cherenkov Instability, for plasmas flowing at a uniform velocity.
Application of the method is shown by modeling plasma accelerators in a
Lorentz-transformed optimal frame of reference
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