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Molecular Physics
An International Journal at the Interface Between Chemistry and Physics
Volume 28, 1974 - Issue 4
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Original Articles

Assignment of h.f.s. constants of 1,4-benzosemiquinones by additivity rules. The free rotation of t-butyl groups

Jens A. Pedersen Department of Physical Chemistry, Aarhus University, 140 Langelandsgade, 8000, Aarhus C, Denmark
Pages 1031-1035 | Received 07 Feb 1974, Published online: 22 Aug 2006

Citations (19)

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Paul Ashworth. (1975) Substituent and solvent perturbations for h.f.s. constants in 1,4-semiquinones. The additivity principle. Molecular Physics 30:1, pages 313-317.
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Articles from other publishers (18)

Jens Arne Pedersen & Jens Spanget-Larsen. (2021) Gallate semiquinone radical tri-anion. Experimental and theoretical studies of the 13C hyperfine coupling constants. Journal of Molecular Structure 1241, pages 130663.
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Jens Spanget-Larsen. (2020) Semiquinone radical anions derived from 2,3-dimethylchrysazin, 7-deoxyaklavinone, and aclacinomycin T. Computational studies of the influence of aprotic and protic solvents on the electron spin resonance spectra. Journal of Molecular Liquids 320, pages 114508.
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Jens Spanget–Larsen. (2020) Chrysazin semiquinone radical anion. A theoretical study of the influence of the solvent on the electron spin resonance spectrum. Computational and Theoretical Chemistry 1185, pages 112878.
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Boryana Mladenova, Daniel R. Kattnig & Günter Grampp. (2006) ESR-Investigations on the Dynamic Solvent Effects of Degenerate Electron Exchange Reactions. Part I: Cyanobenzenes. Zeitschrift für Physikalische Chemie 220:4, pages 543-562.
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S. Kasa, R. Mäkelä, E. Salo, K. Hannonen & H. Joela. (1991) Electron paramagnetic resonance, ENDOR and TRIPLE resonance studies on substitution reactions of 2-methyl-1,4-benzoquinone and 2,3-dimethoxy-5-methyl-1,4-benzoquinone in alkaline methanol. J. Chem. Soc., Faraday Trans. 87:19, pages 3163-3170.
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Heikki Joela & Reijo Mäkelä. (1989) The additivity relationship and substituent effects studied by EPR and multiresonance spectroscopy. Journal of Magnetic Resonance (1969) 84:2, pages 236-246.
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Martin G Bakker, Rodney F.C Claridge & Christopher M Kirk. (1987) Applicability of the additivity relationship to ESR coupling constants. Journal of Magnetic Resonance (1969) 74:3, pages 503-525.
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J. Ladik, H. Wendel, P. Otto & S.C. Liu. (1987) Unrestricted Hartree—Fock calculations of methoxyl-substituted semiquinone radicals and the proton hyperfine coupling constants. Journal of Molecular Structure: THEOCHEM 152:1-2, pages 1-9.
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Peter R. C. Gascoyne & Albert Szent-Gy�rgyi. (1984) Anomalous electrochemical and electron spin resonance properties of some biologically relevant methoxyl-substituted quinones. International Journal of Quantum Chemistry 26:S11, pages 217-222.
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C. Sieiro, F. Yague & A. Sanchez. (1983) Indo study of the solvation influence on the hyperfine coupling constants in p-benzosemiquinone radical anion.. Journal of Molecular Liquids 27, pages 1-10.
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Jens A Pedersen & R.H Thomson. (1981) EPR study of hydroxyanthrasemiquinones. Assignment of hyperfine structure by additivity. Journal of Magnetic Resonance (1969) 43:3, pages 373-386.
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K. B. Ulmschneider & H. B. Stegmann. 1980. Organic Anion Radicals. Organic Anion Radicals 367 375 .
K. B. Ulmschneider & H. B. Stegmann. 1980. Organic Anion Radicals. Organic Anion Radicals 176 192 .
K. B. Ulmschneider & H. B. Stegmann. 1980. Organic Anion Radicals. Organic Anion Radicals 162 175 .
K. B. Ulmschneider & H. B. Stegmann. 1980. Organic Anion Radicals. Organic Anion Radicals 159 162 .
Jens Spanget-Larsen. (1978) INDO Calculations with inclusion of an effective solvent field. Application to benzosemiquinones. Theoretica Chimica Acta 47:4, pages 315-328.
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Jens Arne Pedersen & Jens Spanget-Larsen. (1975) The strong influence of the solvent on the spin distribution in 1,2-benzosemiquinones. Chemical Physics Letters 35:1, pages 41-44.
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Jens Spanget-Larsen & Jens A Pedersen. (1975) Solvent sensitivities of the hyperfine constants of methyl- and t-butyl-substituted 1,4-benzosemiquinones. Journal of Magnetic Resonance (1969) 18:2, pages 383-389.
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