The Magnetic Properties of Verdazyl Free Radicals. VI. ESR Studies of Pairs and Triadst of the Symmetrical Triphenylverdazyl Radical in the 1,3,5-Triphenylbenzene Matrix
スポンサーリンク
概要
- 論文の詳細を見る
Single-crystal ESR studies have been carried out on symmetrical triphenylverdazyl (TPV) doped in a diamagnetic 1,3,5-triphenylbenzene (TPB) crystal at room temperature. There have appeared seven pairs of fine-structure absorptions in addition to the hyperfine splittings. Three out of the seven pairs have been assigned as zero-field splittings due to radical pairs, while the other three pairs have been identified as from radical triads. The six fine structure tensors have been determined through the angular variation of the resonance-field separations. The structures of the pairs and triads of TPV were discussed on the basis of the fine structure tensors, the crystal structures of TPB and TPV, and the spin distribution in the radical molecule, assuming that the unit cell of the mixed crystal with the radical concentration of less than 11.1% is identical with that of the host crystal, TPB. Within the limits of the X-ray examination, this assumption was found to be reliable. It was found that the molecular planes in each species are almost parallel to the <I>bc</I>-plane and that all the <I>C</I>-phenyl rings lie in the <I>c</I>-direction.
- 公益社団法人 日本化学会の論文
著者
-
Mukai Kazuo
Department Of Chemistry Faculty Of Science Ehime University
-
Azuma Nagao
Department Of Chemistry Faculty Of Science Ehime University
-
Deguchi Yasuo
Department Of Chemistry Faculty Of Science Kyoto University
-
Yamauchi Jun
Department Of Chemistry College Of Liberal Arts Kyoto University
-
Ohya-Nishiguchi Hiroaki
Department of Chemistry, Faculty of Science, Kyoto University
-
Yamauchi Jun
Department of Chemistry, Faculty of Science, Kyoto University
関連論文
- Heat Capacity Study of the Doping Effect of Paramagnetic Radicals on the Organic Spin-Peierls System (p-CyDOV Radical Crystal)
- Heat Capacity Study of the Doping Effect of Paramagnetic Radicals on the Organic Spin-Peierls System (p-CyDOV Radical Crystal)
- High-Field Magnetization Study of the Doping Effect of Magnetic Impurity on the Organic Spin-Peierls System : p-CyDOV Radical Crystal
- Intermolecular Hydrogen Bonds between a Radical and a Diamagnetic Matrix : CW-ESR Investigations of 2, 6-Di-tert-butyl-4-hydroxymethylphenol
- Magnetism of a Two-Dimensional Weak-Ferromagnetic Organic Radical Crystal,1,3,5-Tripheny1-6-Oxoverdazyl
- Tunneling Effect in Antioxidant Reaction of Flavonoid
- Kinetic Study on the Free Radical-Scavenging and Vitamin E-Regenerating Actions of Caffeic Acid and Its Related Compounds
- Kinetic Study of the Mechanism of Free-Radical Scavenging Action in Curcumin : Effects of Solvent and pH
- A CIDEP Study on the Photosensitized Reaction of Maleimide with Xanthone: Addition Effect of Hydrochloric Acid
- Experimental Check of Heisenberg Chain Quantum Statistics for a Ferromagnetic Organic Radical Crystal
- Formation and Decay Dynamics of Vitamin E Radical in the Antioxidant Reaction of Vitamin E
- Magnetic Susceptibility of Yang's a Biradical from 4.2 to 293°K
- Kinetics of Vitamin E Regeneration by Water-Soluble Antioxidants in Micellar Dispersions
- Anomaly in the X-T Curve of Galvinoxyl Radical
- Paramagnetic Semiconductors : Hybrid Molecular Materials Based on Ethyl- and Methyl-pyridinium-Substituted Verdazyl Radical Cations and the Ni(dmit)_2 Anion (dmit= 1,3-Dithiol-2-thione-4,5-dithiolate)
- Magnetic Property of Verdazyl Radical Alloy,(p-CDpOV)_ (p-BDpOV)_x.Doping Effect of Magnetic Impurities on Quasi-One Dimensional Heisenberg Organic Ferromagnet (p-CDpOV) and Antiferromagnet (p-BDpOV) with S=1/2
- A DYNAMICAL PROFILE OF METAL INCORPORATION TO A LIPOSOMAL MEMBRANE AS STUDIED BY ELECTROM SPIN RESONANCE
- Excited High-Spin Quartet (S=3/2) State of a Novel π-Conjugated Organic Spin System, Pyrene-Verdazyl Radical
- Synthesis and Properties of 1,2:5,6-Bis(ethylenedithio)pyracylene
- Radical Cation Salts of 2,3,8,9 -Tetrahydro - 1,4,7,10 - tetrathiachrysene
- Kinetic Study of Radical-Scavenging and Vitamin E-Regenerating Actions of Edaravone (3-Methyl-1-phenyl-2-pyrazolin-5-one)
- Magnetic Interaction and Phase Transition in the Organic Free Radical TANOL in Hydrostatic Pressures
- Magnetic Properties of Organic Stable Radicals. I. : 2,2,2,6-Tetramethyl-4-Hydroxypiperidine-1-Oxyl
- Self-Assembly of Hexakis(4-pyridylmethoxy)cyclotriphosphazene and 1,4-Anthracenedicarboxylic Acid : Structure and Inclusion Behavior
- Theory of the Structural Phase Transitions in TTF-TCNQ. : I.
- Magnetic Behavior of Organic Free Radicals with Localized and Delocalized Electrons
- High-Field Magnetization Study of the Doping Effect of Magnetic Impurity on the Organic Spin-Peierls System: $p$-CyDOV Radical Crystal
- Electron Spin Resonance Spectra of Nitrophenol Anion Radicals
- Dietary Reference Intakes for Japanese 2010: Microminerals
- ESR Studies of Stable Free Radical Pairs in the Diamagnetic Matrix Crystal
- Kinetic studies of antioxidant activity of new tocopherol model compounds in solution.
- Stopped-flow investigation of antioxidant activity of tocopherols.
- Electron spin distributions and g-value shifts in the novel electron donors with 1,3-dithiole rings.
- ESR spectra of six-coordinate cobalt(III) tetraphenylporphyrin cation radicals generated by electrochemical oxidation. II. Axial ligand and solvent effects.
- Electronic structures of purine bases studied by electrochemical-ESR techniques. Spin distribution in purine anion radical.
- Stabilization energy and spin distribution in pyrenophane cation radicals.
- ESR Study of Spin-Spin Interactions in Verdazyl Biradicals. II
- ENDOR studies of the complexation reaction between spin-labeled crown ether and alkali metal salts.
- ESR and ENDOR studies of cation radicals derived from benzodipyran compounds. Structure and dynamic behavior of heterocyclic ring in tocopherol (vitamin E).
- ENDOR studies on low-symmetry triphenylmethyl with ortho or para-methoxy substituents.
- ENDOR studies of the hyperfine interaction of phenylgalvinoxyl radicals in solution.
- Proton Magnetic Resonance in Organic Free Radicals, BDPA–Bz and p-Cl-BDPA
- ESR Spectra of six-coordinate cobalt(III) tetraphenylporphyrin cation radicals generated by electrochemical oxidation.
- Optical spectra of tocopheroxyl model radicals.
- ESR 13C Hyperfine Structures of the Meta-substituted t-Butyl Biphenyl Anion Radical
- The photochemical formation of the .PI.-cation radical from chloro(5,10,15,20-tetraphenylporphyrinato)cobalt(III) in aerated dichloromethane.
- Fading mechanism of paint films composed of insoluble azo pigment and titanium dioxide.
- Both oxidation and reduction of aromatic hydrocarbons by an electrolysis cell designed for low-temperature ESR studies.
- Spin label investigation of the crown ether. Complex formation between the veratrole analogue of phenoxyl-labeled benzo-15-crown-5 and alkali and alkaline earth metal salts in frozen solution.
- Experimental Studies on Characteristics of Pressure Attenuation and Recovery to Saturation for Decompressive Disturbances in Low Pressurized Water
- Anomalous Magnetic Properties of Crystalline Galvinoxyl Radical. IV. Effect of the Deuterium Substituent
- Spin density distribution and energy stabilization in the cation radicals of multilayered compounds.
- The Magnetic Properties of Manganese(II) Phthalocyanine
- ESR Investigation of alkali metal complexes of galvinoxyl-labeled benzo-15-crown-5 in frozen solution.
- The Magnetic Properties of Verdazyl Free Radicals. VI. ESR Studies of Pairs and Triadst of the Symmetrical Triphenylverdazyl Radical in the 1,3,5-Triphenylbenzene Matrix
- The Magnetic Properties of Cu3Cl6(C6H7NO)2·2H2O
- The Proton Magnetic Resonance in the DPPH–Benzene Complex
- Dipolar Interaction in TEMPAD Biradical
- The ESR spectrum of a .PI. cation radical trapped in a single crystal of chloro(tetraphenylporphyrinato)cobalt(III).
- The Chlorine Nuclear Quadrupole Resonance in an Organic Free Radical, p-Cl-EDPA
- ENDOR Studies on the Hindered Alkylbiphenyl Anion Radicals
- Proton Magnetic Resonance in Some Triarylaminium Salt Free Radicals
- ESR studies on 2,3,5-triphenyltetrazolyl and 2,3-(2,2'-biphenylylene)-5-phenyltetrazolyl radicals.
- ESR and ENDOR studies of the hindered internal rotation of higher alkyl groups. 2,6-Di-t-butyl-4-alkylphenoxyl radicals.
- Magnetic Properties of Some Iminoxyl Polyradicals. II. TEMPOP Triradical and TEMPOS Tetraradical
- ESR studies of temperature dependent zero-field splitting in yang's biradical.
- The Magnetic Properties of Verdazyl Free Radicals. IX. The Crystal Structure of 1,3,5-Triphenyl-6-methylverdazyl Radical