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NMR STUDY OF SOLVENT EFFECTS ON P-H COUPLING

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/8079

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Title: NMR STUDY OF SOLVENT EFFECTS ON P-H COUPLING
Creators: Patton, H. W.
Issue Date: 1961
Abstract: The effects of solvents on NMR chemical shifts are well $known.^{1}$ Perceptible changes in spin coupling constants due to medium efforts are reported for a very few $systems.^{2}$ The few reported changes were observed for hydrogen atoms attached to adjacent carbon atoms and attributed to variation of nuclear spin coupling with dihedral angle. In this paper the P-H coupling constants (from proton resonance) for dialkyl hydrogen phosphites in various solvents are reported. Smile solvents increased the coupling and others decreased it with respect to the value for the neat liquid. Monotonic variation with concentration was observed. The solvent effects described are of a different kind from those previously reported in that they involve couplings between atoms directly bonded together.
URI: http://hdl.handle.net/1811/8079
Other Identifiers: 1961-G-4
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