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Solvent effects on the nitrogen screening of some nitroalkanes
Author(s) -
Witanowski M.,
Stefaniak L.,
Lamphun B. Na,
Webb G. A.
Publication year - 1981
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.1270160115
Subject(s) - solvent , nitrogen , dielectric , chemistry , solvent effects , materials science , photochemistry , analytical chemistry (journal) , organic chemistry , optoelectronics
Abstract High precision 14 N screening measurements are presented for some nitroalkanes. The screening increases as the dielectric constant of the solvent decreases in all cases considered. The β effect on the nitrogen screening is found to be largely independent of solvent, and is thus an intrinsic property of the nitroalkanes. Good agreement is obtained between the observed solvent effects on nitrogen screening and those calculated by the SOS procedure using INDO/S parameters. It is concluded that the measured nitrogen screening changes monitor the electronic changes which occur in the nitroalkanes as the medium is changed.