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Assignment of carbon‐13 NMR spectra and sign determination of long range carbon‐13—proton coupling constants with SPI
Author(s) -
Chalmers A. A.,
Pachler K. G. R.,
Wessels P. L.
Publication year - 1974
Publication title -
organic magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0030-4921
DOI - 10.1002/mrc.1270060810
Subject(s) - geminal , coupling constant , chemistry , sign (mathematics) , spectral line , nitroethane , carbon 13 , range (aeronautics) , analytical chemistry (journal) , nuclear magnetic resonance , stereochemistry , materials science , physics , nitromethane , organic chemistry , mathematics , nuclear physics , quantum mechanics , mathematical analysis , composite material
The application of selective population inversion (SPI) to the assignment of 13 C resonances and to the determination of the relative sign of 13 C 1 H coupling constants is demonstrated for 1‐phenyl‐1,2‐dibromo‐2‐nitroethane. A negative sign for the geminal C‐2H‐1 coupling constant has been determined from the 13 C spectra. The relationship between SPI and TSI is discussed.