D-labeled methyl radicals

D-Labelled Methyl Radicals Nuclear Spin-Rotation Couplings... 

The reader can refer to [75, 85] for more details on the nuclear spin-rotation couplings of the selectively D-labelled methyl radicals. 

A methyl radical flux of j 2 x 1015 cm 2s 1 is directed to the surface of a pre-deposited a-C D film. For film deposition, CD4 was used as the plasma source gas instead of CH4. Isotopic labelling of the substrate film is very advantageous for in-situ infrared spectroscopic measurements since it... 

Phenyl radical, side by side with methyl radical, carbon dioxide and methyl benzoate, was also stabilized in an inert matrix as a product of UV photolysis of acetyl(benzoyl)peroxide [112] (Pacansky and Brown, 1983). Of nine IR bands of the radical CeHj, intense absorption at 710cm , which was shifted to 519 cm for the deuterium-labelled radical C D, has been assigned to out-of-plane CH deformation. The bands of the phenyl radical... 

The present ESR studies using the selectively D-labeled methanes, CD4 and CH2D2, unambiguously revealed that the hydrogen atom and the methyl radical present in pairs originate from the same methane molecule, suggesting that the radical pair formation is caused by the homolytic C— H bond scission via the electronically excited methane molecule (CHp. The H-atoms initially formed may... 

Morvillo and Turco have shown by H/D-labeling studies that platinum monoalkyl complexes /rans-[PtMe(I)(L)2] can decompose thermally by two pathways (L = phosphine). The initial step in the more important one is homolytic (145), the methyl radical so produced abstracting a hydrogen... 

A number of decompositions of n-butylbenzene and n-pentylbenzene following FI have been elucidated through D- and C-labelling [90, 902]. Methyl and ethyl radicals were lost from the ends of the alkyl chains, but there was evidence of interaction between the chains and the phenyl rings. Hydrogen transfers from the side chains via 5-, 6- emd... 

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