H-1-H-1 AND H-1-F-19 COUPLING-CONSTANTS OF SOME STYRENE, BENZALDEHYDEAND BENZYLIDENE AMINE DERIVATIVES

Authors
SUNTIOINEN S LAATIKAINEN R KRAL V
Citation
S. Suntioinen et al., H-1-H-1 AND H-1-F-19 COUPLING-CONSTANTS OF SOME STYRENE, BENZALDEHYDEAND BENZYLIDENE AMINE DERIVATIVES, Magnetic resonance in chemistry, 32(1), 1994, pp. 51-54
Citations number
22
Categorie Soggetti
Spectroscopy,Chemistry
Journal title
Magnetic resonance in chemistry → ACNP
ISSN journal
07491581
Volume
32
Issue
1
Year of publication
1994
Pages
51 - 54
Database
ISI
SICI code
0749-1581(1994)32:1<51:HAHCOS>2.0.ZU;2-P
Abstract
Five para-fluorobenzene derivatives having a -CH=CR(2) or a -CH=NR gro up were prepared and their H-1 and F-19 NMR spectra in acetone-d(6) we re analysed. The (6)J(H-alpha,F) and (4)J(H-alpha,H) couplings of the nitrogen derivatives fall between those of the carbon and oxygen deriv atives: the electronegativity of the side-chain beta-atom seems to hav e a prominent role in the spin information transmission. The (6)J(H-al pha,F) and (4)J(H-alpha,H) couplings indicate that the nitrogen deriva tives are rigidly planar whereas the carbon derivatives are non-planar .