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Application of Pulsed Field Gradient Long-range COSY-NMR for the Assignment of Geminal Protons on Rigid System: supplemental method of NOE Experiment
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2005, v.18 no.1, pp.85-88
(2005). Application of Pulsed Field Gradient Long-range COSY-NMR for the Assignment of Geminal Protons on Rigid System: supplemental method of NOE Experiment. Analytical Science and Technology, 18(1), 85-88.
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Abstract
Antiphase character of cross peaks in long-range COSY is modulated by changing the fixed delay time and used to assign diastereotopic methylene protons on rigid systems which could produce unpredictable NOE phenomena because of complicate coupling spins.
- keywords
- NOE, Diastereotopic methylene, PFG long-range COSY
Reference
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(1996) In Encyclopedia of NMR,
2
(1985.) Two-Dimensional Nuclear Magnetic Resonance in Liquids, Delft University Press
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(1989.) The Nuclear Overhauser Effect in Structural and Conformational Analysis, VCH Publisher
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Bruker reported that 10 % gradient strength for a standard 5 mm Willmad sample tube trans- lated into a gradient strength of 5.14 Gs/cm.,
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Technical Information Bulletin No. AL-199,
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