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3 J (PCNH) in phosphorus substituted thioformamides as a configurational probe
Author(s) -
Dahl Otto,
Laursen Svend Aage
Publication year - 1976
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.1270080102
Subject(s) - coupling constant , phosphorus , chemistry , spectral line , phosphorus 31 nmr spectroscopy , stereochemistry , crystallography , series (stratigraphy) , constant (computer programming) , computational chemistry , physics , nuclear magnetic resonance spectroscopy , organic chemistry , particle physics , quantum mechanics , paleontology , computer science , biology , programming language
Coupling between P and (N)H has been observed in the 1 H{ 14 N}NMR spectra of a series of phosphorus substituted thioformamides, R 1 2 /P(X)C(S)NHR 2 . For R 2 = H one of the two couplings constants 3 J (PCNH) is much larger than the other. The larger constant is assumed to be 3 J (PCNH) ( trans ) and the magnitude of 3 J (PCNH) for several compounds with R 2 = Me or Ph is used to assign the configuration about the C(S)N bond.