Ray Freeman - Publications

Affiliations: 
University of Cambridge, Cambridge, England, United Kingdom 
Area:
nuclear magnetic resonance
Website:
http://www-jmg.ch.cam.ac.uk/oldchem/staff/rf.html

70 high-probability publications. We are testing a new system for linking publications to authors. You can help! If you notice any inaccuracies, please sign in and mark papers as correct or incorrect matches. If you identify any major omissions or other inaccuracies in the publication list, please let us know.

Year Citation  Score
2015 Freeman R, Morris GA. The Varian story. Journal of Magnetic Resonance (San Diego, Calif. : 1997). 250: 80-4. PMID 25532932 DOI: 10.1016/J.Jmr.2014.12.001  1
2011 Freeman R, Kempsell SP, Levitt MH. Radiofrequency pulse sequences which compensate their own imperfections. 1980. Journal of Magnetic Resonance (San Diego, Calif. : 1997). 213: 247-73. PMID 22152347 DOI: 10.1016/J.Jmr.2011.08.032  1
2011 Morris GA, Freeman R. Selective excitation in Fourier transform nuclear magnetic resonance. 1978. Journal of Magnetic Resonance (San Diego, Calif. : 1997). 213: 214-43. PMID 22152346 DOI: 10.1016/J.Jmr.2011.08.031  1
2011 Freeman R, Morris GA. The 'DANTE' experiment. Journal of Magnetic Resonance (San Diego, Calif. : 1997). 213: 244-6. PMID 21906980 DOI: 10.1016/J.Jmr.2011.08.020  1
2010 Kupče Ä’, Kay LE, Freeman R. Detecting the "afterglow" of 13C NMR in proteins using multiple receivers. Journal of the American Chemical Society. 132: 18008-11. PMID 21126087 DOI: 10.1021/Ja1080025  1
2004 Freeman R, Kupče E. Distant echoes of the accordion: Reduced dimensionality, GFT-NMR, and projection-reconstruction of multidimensional spectra Concepts in Magnetic Resonance Part A. 23: 63-75. DOI: 10.1002/Cmr.A.20021  0.48
2004 Kupče E, Freeman R. The Radon Transform: A New Scheme for Fast Multidimensional NMR Concepts in Magnetic Resonance Part A. 22: 4-11. DOI: 10.1002/Cmr.A.20006  0.48
2003 Freeman R. Beg, borrow, or steal. Finding ideas for new NMR experiments Concepts in Magnetic Resonance Part a: Bridging Education and Research. 17: 71-85. DOI: 10.1002/Cmr.A.10059  1
1997 Freeman R, Kupče E. Decoupling: theory and practice. I. Current methods and recent concepts. Nmr in Biomedicine. 10: 372-380. PMID 9542735 DOI: 10.1002/(Sici)1099-1492(199712)10:8<372::Aid-Nbm478>3.0.Co;2-Z  0.48
1995 Freeman R. A short history of NMR Chemistry of Heterocyclic Compounds. 31: 1004-1005. DOI: 10.1007/Bf01165047  1
1995 MIAO X, FREEMAN R. A Homonuclear Equivalent of the INEPT Experiment. Simplification of Crowded Proton Spectra and Measurement of Unresolved Couplings Journal of Magnetic Resonance, Series A. 117: 128-131. DOI: 10.1006/Jmra.1995.9957  1
1995 MIAO X, FREEMAN R. A Spin-Echo Technique for Separation of Multiplets in Crowded Spectra Journal of Magnetic Resonance, Series A. 116: 273-276. DOI: 10.1006/Jmra.1995.0021  1
1992 Freeman R. High resolution NMR using selective excitation Journal of Molecular Structure. 266: 39-51. DOI: 10.1016/0022-2860(92)80048-M  1
1991 Geen H, Freeman R. Band-selective radiofrequency pulses Journal of Magnetic Resonance. 93: 93-141. DOI: 10.1016/0022-2364(91)90034-Q  0.92
1990 Gezelter JD, Freeman R. Use of neural networks to design shaped radiofrequency pulses Journal of Magnetic Resonance (1969). 90: 397-404. DOI: 10.1016/0022-2364(90)90149-4  1
1988 Freeman R. Molecular structure by two-dimensional NMR spectroscopy Journal of Molecular Structure. 173: 17-30. DOI: 10.1016/0022-2860(88)80040-1  1
1988 Davies SJ, Bauer C, Hore PJ, Freeman R. Resolution enhancement by nonlinear data processing. “HOGWASH” and the maximum entropy method Journal of Magnetic Resonance. 76: 476-493. DOI: 10.1016/0022-2364(88)90351-4  0.48
1987 Shaka AJ, Barker PB, Freeman R. Three-spin effects in broadband decoupling Journal of Magnetic Resonance (1969). 71: 520-531. DOI: 10.1016/0022-2364(87)90251-4  1
1986 Shaka AJ, Barker PB, Bauer CJ, Freeman R. Cycling sidebands in broadband decoupling Journal of Magnetic Resonance (1969). 67: 396-401. DOI: 10.1016/0022-2364(86)90451-8  1
1986 Shaka AJ, Barker PB, Freeman R. Experimental demonstration of wideband spin inversion Journal of Magnetic Resonance (1969). 67: 580-584. DOI: 10.1016/0022-2364(86)90398-7  1
1985 Barker PB, Freeman R. Pulsed field gradients in NMR: an alternative to phase cycling Journal of Magnetic Resonance. 64: 334-338. DOI: 10.1016/0022-2364(85)90360-9  0.6
1985 Shaka AJ, Keeler J, Smith MB, Freeman R. Spatial localization of NMR signals in an inhomogeneous radiofrequency field Journal of Magnetic Resonance (1969). 61: 175-180. DOI: 10.1016/0022-2364(85)90282-3  1
1985 Shaka AJ, Freeman R. A composite 180° pulse for spatial localization Journal of Magnetic Resonance (1969). 63: 596-600. DOI: 10.1016/0022-2364(85)90252-5  1
1985 Neuhaus D, Keeler J, Freeman R. Investigation of individual proton spin multiplets by C → H correlation spectroscopy Journal of Magnetic Resonance (1969). 61: 553-558. DOI: 10.1016/0022-2364(85)90197-0  1
1985 Barker PB, Shaka AJ, Freeman R. Homonuclear Hartmann-Hahn effects in broadband decoupling Journal of Magnetic Resonance (1969). 65: 535-539. DOI: 10.1016/0022-2364(85)90143-X  1
1985 Shaka AJ, Barker PB, Freeman R. Computer-optimized decoupling scheme for wideband applications and low-level operation Journal of Magnetic Resonance (1969). 64: 547-552. DOI: 10.1016/0022-2364(85)90122-2  1
1985 Shaka AJ, Freeman R. Spatially selective pulse sequences: Elimination of harmonic responses Journal of Magnetic Resonance (1969). 62: 340-345. DOI: 10.1016/0022-2364(85)90072-1  1
1985 Davies S, Bauer C, Barker P, Freeman R. The dynamic range problem in NMR Journal of Magnetic Resonance. 64: 155-159. DOI: 10.1016/0022-2364(85)90045-9  0.48
1985 Shaka AJ, Freeman R. "Prepulses" for spatial localization Journal of Magnetic Resonance (1969). 64: 145-150. DOI: 10.1016/0022-2364(85)90043-5  1
1984 Shaka AJ, Freeman R. Spatially selective radiofrequency pulses Journal of Magnetic Resonance (1969). 59: 169-176. DOI: 10.1016/0022-2364(84)90297-X  1
1984 Mehlkopf AF, Korbee D, Tiggelman TA, Freeman R. Sources of t1 noise in two-dimensional NMR Journal of Magnetic Resonance (1969). 58: 315-323. DOI: 10.1016/0022-2364(84)90221-X  1
1984 Shaka AJ, Keeler J, Freeman R. Separation of chemical shifts and spin coupling in proton NMR. Elimination of dispersion signals from two-dimensional spectra Journal of Magnetic Resonance (1969). 56: 294-313. DOI: 10.1016/0022-2364(84)90107-0  1
1984 Shaka AJ, Bauer C, Freeman R. Selective population transfer effects in nuclear overhauser experiments Journal of Magnetic Resonance (1969). 60: 479-485. DOI: 10.1016/0022-2364(84)90060-X  1
1984 Shaka AJ, Keeler J, Freeman R, Morris GA, Nayler GL. Real-time J scaling in carbon-13 NMR. II. An analysis of instrumental imperfections Journal of Magnetic Resonance (1969). 58: 161-166. DOI: 10.1016/0022-2364(84)90017-9  1
1984 Morris GA, Nayler GL, Shaka AJ, Keeler J, Freeman R. Real-time J scaling in carbon-13 NMR. I. A simple technique for multiplicity determination Journal of Magnetic Resonance (1969). 58: 155-160. DOI: 10.1016/0022-2364(84)90016-7  1
1984 Levitt MH, Freeman R, Frenkiel T. Broadband Decoupling In High-Resolution Nuclear Magnetic Resonance Spectroscopy Cheminform. 15. DOI: 10.1002/Chin.198410353  1
1983 Bhacca NS, Balandrin MF, Kinghorn AD, Frenkiel TA, Freeman R, Morris GA. C-13 And Proton Two-Dimensional Nmr-Study Of The Ormosia Alkaloids Panamine, Ormosanine, And Ormosinine Journal of the American Chemical Society. 105: 2538-2544. DOI: 10.1021/Ja00347A003  0.96
1983 Mareci TH, Freeman R. Mapping proton-proton coupling via double-quantum coherence Journal of Magnetic Resonance (1969). 51: 531-535. DOI: 10.1016/0022-2364(83)90305-0  1
1983 Shaka AJ, Frenkiel T, Freeman R. NMR broadband decoupling with low radiofrequency power Journal of Magnetic Resonance (1969). 52: 159-163. DOI: 10.1016/0022-2364(83)90269-X  1
1983 Shaka AJ, Keeler J, Frenkiel T, Freeman R. An improved sequence for broadband decoupling: WALTZ-16 Journal of Magnetic Resonance (1969). 52: 335-338. DOI: 10.1016/0022-2364(83)90207-X  1
1983 Shaka AJ, Freeman R. Composite pulses with dual compensation Journal of Magnetic Resonance (1969). 55: 487-493. DOI: 10.1016/0022-2364(83)90133-6  1
1983 Shaka AJ, Freeman R. Simplification of NMR spectra by filtration through multiple-quantum coherence Journal of Magnetic Resonance (1969). 51: 169-173. DOI: 10.1016/0022-2364(83)90117-8  1
1983 Shaka AJ, Keeler J, Freeman R. Evaluation of a new broadband decoupling sequence: WALTZ-16 Journal of Magnetic Resonance (1969). 53: 313-340. DOI: 10.1016/0022-2364(83)90035-5  1
1983 Bhacca NS, Balandrin MF, Kinghorn AD, Frenkiel TA, Freeman R, Morris GA. Carbon-13 and proton two-dimensional NMR study of the Ormosia alkaloids panamine, ormosanine, and ormosinine Journal of the American Chemical Society. 105: 2538-2544. DOI: 10.1002/Chin.198332043  1
1983 Freeman R, Frenkiel T, Rubin MB. Structure Of A Photodimer Determined By Natural‐Abundance 13C‐13C Coupling Cheminform. 14. DOI: 10.1002/Chin.198301067  0.72
1982 Freeman R, Frenkiel T, Rubin MB. Structure of a photodimer determined by natural-abundance 13C-13C coupling Journal of the American Chemical Society. 104: 5545-5547. DOI: 10.1021/Ja00384A072  0.72
1982 Mareci TH, Freeman R. Echoes and antiechoes in coherence transfer NMR: Determining the signs of double-quantum frequencies Journal of Magnetic Resonance (1969). 48: 158-163. DOI: 10.1016/0022-2364(82)90250-5  1
1982 Sørensen OW, Freeman R, Frenkiel T, Mareci TH, Schuck R. Observation of 13C13C couplings with enhanced sensitivity Journal of Magnetic Resonance (1969). 46: 180-184. DOI: 10.1016/0022-2364(82)90181-0  1
1982 Levitt MH, Freeman R, Frenkiel T. Broadband heteronuclear decoupling Journal of Magnetic Resonance. 47: 328-330. DOI: 10.1016/0022-2364(82)90124-X  1
1982 Shaka AJ, Freeman R. Selective excitation of proton spectra by polarization transfer from an adjacent carbon site Journal of Magnetic Resonance (1969). 50: 502-507. DOI: 10.1016/0022-2364(82)90016-6  1
1981 Mareci TH, Freeman R. Nitrogen-15 satellites in proton NMR spectra observed by two-dimensional fourier transformation Journal of Magnetic Resonance (1969). 44: 572-576. DOI: 10.1016/0022-2364(81)90290-0  1
1981 Freeman R, Mareci TH, Morris GA. Weak satellite signals in high-resolution NMR spectra: Separating the wheat from the chaff Journal of Magnetic Resonance (1969). 42: 341-345. DOI: 10.1016/0022-2364(81)90227-4  1
1981 Freeman R, Frenkiel TA, Levitt MH. Composite Z pulses Journal of Magnetic Resonance. 44: 409-412. DOI: 10.1016/0022-2364(81)90181-5  1
1981 Levitt MH, Freeman R. Compensation for Pulse Imperfections in NMR Spin-Echo Experiments Journal of Magnetic Resonance. 43: 65-80. DOI: 10.1016/0022-2364(81)90082-2  1
1981 Freeman R, Keeler J. Suppression of artifacts in two-dimensional J spectra Journal of Magnetic Resonance (1969). 43: 484-487. DOI: 10.1016/0022-2364(81)90061-5  1
1980 Bax A, Mehlkopf T, Smidt J, Freeman R. A simple method for detection of zero-quantum transitions in NMR Journal of Magnetic Resonance (1969). 41: 502-506. DOI: 10.1016/0022-2364(80)90308-X  1
1978 Freeman R, Morris GA. Experimental chemical shift correlation maps in nuclear magnetic resonance spectroscopy Journal of the Chemical Society, Chemical Communications. 684-686. DOI: 10.1039/C39780000684  0.96
1978 Bodenhausen G, Freeman R, Morris GA, Turner DL. NMR spectra of some simple spin systems studied by two-dimensional fourier transformation of spin echoes Journal of Magnetic Resonance (1969). 31: 75-95. DOI: 10.1016/0022-2364(78)90172-5  1
1978 Turner DL, Freeman R. The proton-coupled carbon-13 spectrum of cholesterol Journal of Magnetic Resonance (1969). 29: 587-590. DOI: 10.1016/0022-2364(78)90016-1  1
1977 Bodenhausen G, Freeman R, Niedermeyer R, Turner DL. Double fourier transformation in high-resolution NMR Journal of Magnetic Resonance (1969). 26: 133-164. DOI: 10.1016/0022-2364(77)90243-8  1
1977 Freeman R, Morris GA, Turner DL. Proton-coupled carbon-13 J spectra in the presence of strong coupling. I Journal of Magnetic Resonance (1969). 26: 373-378. DOI: 10.1016/0022-2364(77)90183-4  1
1977 Bodenhausen G, Freeman R, Turner DL. Suppression of artifacts in two-dimensional J spectroscopy Journal of Magnetic Resonance (1969). 27: 511-514. DOI: 10.1016/0022-2364(77)90016-6  1
1976 Freeman R, Morris GA, Robinson MJT. Proton-coupled carbon-13 nuclear magnetic resonance spectra from individual carbon sites in a molecule: the rotameric equilibrium in menthone Journal of the Chemical Society, Chemical Communications. 25: 754-755. DOI: 10.1039/C39760000754  0.96
1976 Bodenhausen G, Freeman R, Niedermeyer R, Turner DL. High-resolution NMR in inhomogeneous magnetic fields Journal of Magnetic Resonance (1969). 24: 291-294. DOI: 10.1016/0022-2364(76)90038-X  1
1975 Campbell ID, Freeman R, Turner DL. NMR study of transient complexes in solution by means of a motional anisotropy probe Journal of Magnetic Resonance (1969). 20: 172-176. DOI: 10.1016/0022-2364(75)90164-X  1
1973 Kaptein R, Freeman R, Hill HDW, Bargon J. Carbon-13 CIDNP in the reversible addition of pentafluorobenzoyloxy radicals to chlorobenzene Journal of the Chemical Society, Chemical Communications. 953-954. DOI: 10.1039/C39730000953  0.68
1972 Anderson WA, Freeman R, Hill H. Fourier transform studies of nuclear spin relaxation Pure and Applied Chemistry. 32: 27-40. DOI: 10.1351/Pac197232010027  0.44
1966 Freeman R, Bhacca NS. Systematic use of solvent effects in high-resolution nuclear magnetic resonance The Journal of Chemical Physics. 45: 3795-3805.  1
1963 Freeman R, Bhacca NS, Reilly CA. Analysis of weakly coupled nuclear magnetic resonance spectra: Methyl salicylate The Journal of Chemical Physics. 38: 293-297.  1
1963 Freeman R, Bhacca NS. Relative signs of nuclear spin coupling constants: A refinement of the double-irradiation experiment The Journal of Chemical Physics. 38: 1088-1093.  1
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