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A carbon‐13 nuclear magnetic resonance spectral investigation of substituted triphenyl phosphates
Author(s) -
Buchanan G. W.,
Wightman R. H.,
Malaiyandi M.
Publication year - 1982
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.1270190211
Subject(s) - vicinal , chemistry , chemical shift , alkyl , aryl , carbon atom , electromagnetic shielding , carbon fibers , double bond , carbon 13 nmr , medicinal chemistry , crystallography , stereochemistry , organic chemistry , materials science , composite number , composite material
13 C NMR chemical shifts and 13 C 31 P couplings are reported for triphenyl phosphate and 13 alkyl derivatives. In ortho ‐alkylated materials, it is found that the upfield γ shielding effect is only operative when the carbon atom, situated γ to the exocyclic oxygen, bears at least one hydrogen. Conformational changes about the arylO bond can be monitored via the vicinal 31 pOC 13 C couplings.