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Nuclear Magnetic Resonance Spectroscopy. Spin-Spin Coupling of Carbon to Phosphorus, Mercury, Nitrogen, and Other Elements

Weigert, Frank J. and Roberts, John D. (1973) Nuclear Magnetic Resonance Spectroscopy. Spin-Spin Coupling of Carbon to Phosphorus, Mercury, Nitrogen, and Other Elements. Inorganic Chemistry, 12 (2). pp. 313-316. ISSN 0020-1669. doi:10.1021/ic50120a014.

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Spin-spin coupling between carbon and phosphorus, mercury, nitrogen, and boron has been observed in proton-decoupled ^(13)C spectra. One-bond couplings involving carbon are generally positive and two-bond couplings are negative; however, if unhybridized p orbitals are used in the bonding, such as with phosphorus(III) or fluorine, one-bond couplings are negative and two-bond couplings are positive. A comparison of the magnitudes of carbon-phosphorus and carbon-nitrogen couplings with carbon-carbon couplings shows a significant negative contribution to the coupling constants which suggests that average energy approximation should not be used for this kind of comparison. Carbon-mercury couplings correlate well with carbon-carbon or proton-mercury couplings in similar bonding situations.

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Additional Information:© 1972 American Chemical Society. Received June 8, 1972. Supported in part by the National Science Foundation and by the Public Health Service, Grant No. GM-11072 from the Division of General Medical Sciences. Preliminary communication: F. J. Weigert and J. D. Roberts, J. Amer. Chem. SOC., 91, 4940 (1969). National Science Foundation predoctoral fellow, 1965-1968.
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U.S. Public Health Service (USPHS)GM-11072
NSF Predoctoral FellowshipUNSPECIFIED
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Caltech Gates and Crellin Laboratories of Chemistry4473
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Official Citation:Nuclear magnetic resonance spectroscopy. Spin-spin coupling of carbon to phosphorus, mercury, nitrogen, and other elements Frank J. Weigert and John D. Roberts Inorganic Chemistry 1973 12 (2), 313-316 DOI: 10.1021/ic50120a014
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60949
Deposited By: Ruth Sustaita
Deposited On:15 Oct 2015 23:38
Last Modified:10 Nov 2021 22:42

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