All articles by Ragnar A. Hoffman

10 articles

Articles in volume 13 (1959)

Long Range Coupling of Nuclear Spins in Some Olefinic and Acetylenic Compounds.

Hoffman, Ragnar A.; Gronowitz, Salo

Pages: 1477-1478.

DOI number: 10.3891/acta.chem.scand.13-1477
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Proton Magnetic Resonance of Thiophenes. III. Splitting of Side-chain Resonance Peaks.

Gronowitz, Salo; Hoffman, Ragnar A.

Pages: 1687-1692.

DOI number: 10.3891/acta.chem.scand.13-1687
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Articles in volume 15 (1961)

Proton Magnetic Resonance of Thiophenes. X. On the Mechanism of Side-chain Couplings in Methylthiophenes.

Gronowitz, Salo; Gestblom, Bo; Hoffman, Ragnar A.

Pages: 1201-1202.

DOI number: 10.3891/acta.chem.scand.15-1201
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Articles in volume 17 (1963)

A New Method for the Study of Moderately Rapid Chemical Exchange Rates Employing Nuclear Magnetic Double Resonance.

ForsÚn, Sture; Hoffman, Ragnar A.

Pages: 1787-1788.

DOI number: 10.3891/acta.chem.scand.17-1787
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Articles in volume 18 (1964)

The Relative Signs of the Nuclear Spin-coupling Constants in Tiglaldehyde as Determined by Selective Decoupling and Transitory Selective Irradiation (Nuclear Magnetic Double Resonance) Techniques.

ForsÚn, Sture; Hoffman, Ragnar A.

Pages: 249-266.

DOI number: 10.3891/acta.chem.scand.18-0249
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Relative Signs of Proton Spin Coupling Constants by Multiple Transitory Selective Irradiation. II. The Sign of the Long-Range Aldehyde Coupling in 2-Thiophenealdehydes.

ForsÚn, Sture; Gestblom, Bo; Gronowitz, Salo; Hoffman, Ragnar A.

Pages: 313-320.

DOI number: 10.3891/acta.chem.scand.18-0313
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Proton Magnetic Resonance of Symmetrical Molecules. III. The Analysis of A2B2 Spectra by Perturbation Methods: the (AB)2 Approximation.

Gestblom, Bo; Hoffman, Ragnar A.; Rodmar, S÷ren

Pages: 1222-1236.

DOI number: 10.3891/acta.chem.scand.18-1222
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Articles in volume 19 (1965)

Signs of the Side-chain Spin Couplings in Furans. II. 2-Methyl- and 3-Methylfuran, 2-Furfurylidenemalononitrile, and N-(2-Furfurylidene)aniline.

Rodmar, S÷ren; ForsÚn, Sture; Gestblom, Bo; Gronowitz, Salo; Hoffman, Ragnar A.

Pages: 485-502.

DOI number: 10.3891/acta.chem.scand.19-0485
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Nuclear Magnetic Double Resonance in an ABX Spin System. The Signs of the Long-range Aldehyde Couplings in 2-Bromo-3-thiophenealdehyde.

ForsÚn, Sture; Gestblom, Bo; Hoffman, Ragnar A.; Rodmar, S÷ren

Pages: 503-517.

DOI number: 10.3891/acta.chem.scand.19-0503
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Articles in volume 21 (1967)

Line Width Variations and Partial Virtual Spin Couplings in NMR Spectra of the ABMX and Related Types.

Khan, Ashfaq Ali; Rodmar, S÷ren; Hoffman, Ragnar A.

Pages: 63-74.

DOI number: 10.3891/acta.chem.scand.21-0063
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