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77 Se n.m.r. studies of organoselenium compounds: III—substituent effects in 4,4′‐disubstituted diphenyl selenides and 4,4′‐disubstituted diphenylmethanes studied by 1 H, 13 C and 77 Se spectroscopy
Author(s) -
Gronowitz S.,
Konar A.,
Hörnfeldt A.B.
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.1270090408
Subject(s) - substituent , chemical shift , chemistry , medicinal chemistry , linear correlation , stereochemistry , spectral line , physics , mathematics , quantum mechanics , statistics
77 Se N.m.r. spectra of 4,4′‐disubstituted diphenyl selenides have been obtained. The chemical shifts could be correlated with substituent constants of the Hammett type or with Swain and Lupton two‐parameter equations. No correlations were observed between these 77 Se shifts and the 13 C shifts of the CH 2 group of 4,4′‐disubstituted diphenylmethanes, the latter shifts showing no correlation with substituent constants. On the other hand linear correlation was observed between the 77 Se shifts of the 4,4′‐disubstituted diphenyl selenides and the 1 H shifts of the CH 2 group of the diphenylmethanes, the 13 C shifts of their 1‐carbons and the 19 F shifts of 4‐substituted fluorobenzenes.