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Determination of 3 J ( 31 P 31 P) and 13 C 31 P coupling constants in 1,6‐diphosphatriptycene from carbon‐13 n.m.r. lone pairs effects on 13 C 31 P couplings
Author(s) -
Sørensen S.,
Jakobsen H. J.
Publication year - 1977
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.1270090210
Subject(s) - coupling constant , spectral line , proton , physics , phosphorus 31 nmr spectroscopy , atomic physics , coupling (piping) , carbon 13 , electron , analytical chemistry (journal) , crystallography , chemistry , nuclear physics , nuclear magnetic resonance , nuclear magnetic resonance spectroscopy , materials science , particle physics , astronomy , chromatography , metallurgy
The 31 P 31 P and 13 C 31 P coupling constants in 1,6‐diphosphatriptycene have been obtained from analysis of its proton decoupled 13 C n.m.r. spectra. More accurate data, however, resulted from simultaneous analysis of the proton decoupled 13 C spectra and 31 P( 13 C) satellite spectra. The 13 C 31 P couplings are strongly influenced by the proximity and orientation of the phosphorus lone pair electrons. The first 31 P 31 P coupling in an aromatic diphosphine is reported.