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The use of the selective population inversion technique in the assignment of carbon‐13 n.m.r. resonances in 3,6‐epoxy‐pentacyclo[6.2.1.0 2,7 .0 4,10 .0 5,9 ]undecane
Author(s) -
Dekker T. G.,
Pachler K. G. R.,
Wessels P. L.
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.1270081010
Subject(s) - undecane , heteronuclear molecule , methylene , population inversion , inversion (geology) , population , spectral line , epoxy , nuclear magnetic resonance , physics , stereochemistry , combinatorics , molecular physics , chemistry , crystallography , mathematics , nuclear magnetic resonance spectroscopy , optics , quantum mechanics , organic chemistry , geology , paleontology , laser , demography , structural basin , sociology
Different applications of the selective population inversion technique in an n.m.r. study of 3,6‐epoxypentacyclo‐[6.2.1.0 2,7 .0 4,10 .0 5,9 ] undecane have been demonstrated. The intensity gain accompanying heteronuclear 13 C—{ 1 H} experiments allowed the detection of fine structure due to long range CH couplings otherwise hidden in normal proton coupled 13 C spectra. Definite assignments of two very similar, directly bonded, CH couplings within a methylene group have been made.