34280-33-6Relevant academic research and scientific papers
Spin trapping studies on radical cations of styrene
Ho, Tong-Ing,Lin, Chiou-Rong,Pan, Kai,Hsu, Chi-Wei
, p. 983 - 986 (2001)
The radical cations of styrene (π-type), generated by photosensitized electron-transfer of 1,4-dicyanobenzene (DCB), using 2-methyl-2-nitrosopropane (MNP) as spin trapping agents and nucleophiles as the co-reactant were investigated. The spin-trapped nitr
Photo-oxidation of Alcohols by Hexachlorometalate(IV) Ions (M = Pt, Pd, or Ir): Spin Trapping and Matrix Isolation Electron Spin Resonance Studies
Fadnis, Anand G.,Kemp, Terence J.
, p. 1237 - 1240 (2007/10/02)
Spin-trapping studies reveal that whereas the mild (λ > 380 nm) photolysis of ions 2- (M = Pd, Pt, or Ir) in alcohol (RCH2OH)-water mixtures leads invariably to RHOH, in pure alcoholic media many of the oxidations lead to RCH2.Prolonged, wide-band photolysis leads to the production of H atoms.At 77 K, wide-band photolysis leads to the production of platinum(III) and palladium(III) centres, identifies by their g features, in addition to the expected C-centred organic radicals.
An EPR/ENDOR study of aminoxyls (nitroxides) capable of intramolecular bonding: hydroxyalkyl radical spin adducts of nitrones
Haire, D. Larry,Kotake, Yashige,Janzen, Edward G.
, p. 1901 - 1911 (2007/10/02)
A comparison of the effect of solvent and 13C labeling (of the radical addend) on the EPR (electron paramagnetic resonance) spectra of hydroxyalkyl vs. alkyl radical adducts of α-phenyl-N-tert-butyl nitrone (PBN) and 5,5-dimethyl-1-pyrroline-1-oxide (DMPO) has been investigated.The solution ENDOR spectra in toluene and in ethanol are the first examples studied of aminoxyls with hydroxyl substituents in close proximity to the free radical centre.Diastereometric mixtures of hydroxyalkyl radical adducts are clearly resolved by ENDOR spectroscopy.Conformations of these radicals have been assigned based on the 1H and 13C hyperfine splittings (HFS's) and by differential optimum ENDOR temperatures.Definitive assignements of carbon-centered radical adducts of DMPO and PBN are shown to be feasible by monitoring the β-13C HFS's of the radical addend.Long-range γ-H HFS's from the added radical group can be observed when the deuterated spin trap PBN-d14 is used.The production of 13C labeled hydroxyalkyl adducts of nitrones (e.g., DMPO-13CH2OH, from the reaction of hydroxyl radicals with added 13CH3OH) is shown to be useful as an improved EPR spectroscopic method for the verification of the presence of hydroxyl radicals.
Orientation of Small Moleculles in a Nematic Liquid Crystal as Studied by Electron Spin Resonance
Matsuura, K.,Kotake, Y.,Kuwata, K.
, p. 327 - 334 (2007/10/02)
Based on the measurements of hyperfine splitting constants (hfsc) of small aminoxyl (nitroxide) radicals in the nematic phase of N-4-methoxybenzylidene-4'-n-butylaniline (MBBA) we discussed the relation between the molecular orientation and the molecular shape, especially the contribution of the phenyl groups to the molecular alignments.
