Bicyclo[2.1.0]pent-2-ene. 6JHH spin-spin coupling in the cyclopentadiene Diels-Alder adduct

1970 ◽  
Vol 92 (17) ◽  
pp. 5247-5248 ◽  
Author(s):  
John E. Baldwin ◽  
Robert K. Pinschmidt
Keyword(s):  
Diels Alder ◽  
Spin Coupling ◽  
Spin Spin Coupling ◽  
Alder Adduct

Fluorine magnetic resonance studies. VII. Fluorine-fluorine coupling over five bonds in 1-Fluoro-2-(2'-fluorophenyl)ethanes

1984 ◽  
Vol 37 (8) ◽  
pp. 1769 ◽  
Author(s):  
DA Burgess ◽  
MF Finn ◽  
D Jordan ◽  
ID Rae ◽  
D Walters
Keyword(s):  
Magnetic Resonance ◽  
Diels Alder ◽  
Spin Coupling ◽  
Side Chain ◽  
Magnetic Resonance Studies ◽  
Close Proximity ◽  
New Compounds ◽  
Spin Spin Coupling ◽  
Alder Adduct

Spin-spin coupling between an aromatic fluorine and fluorines in an adjacent side chain (Ar-C-C-F), with J values in the range 2-5 Hz, is reported for four new compounds. The coupling probably arises from through-space interactions taking place when rotation of the side chain brings the two types of fluorine into close proximity. In a Diels-Alder adduct of fluoranil and 1-fluoro-4-methyl- anthracene, this proximity is denied the fluorines and no coupling is observed.

Vibrational and thermal averaging of the indirect nuclear spin-spin coupling constants of CH4, SiH4, GeH4 and SnH4

1997 ◽  
Vol 91 (5) ◽  
pp. 897-907 ◽  
Author(s):  
SHEELA KIRPEKAR ◽  
THOMAS ENEVOLDSEN ◽  
JENS ODDERSHEDE ◽  
WILLIAM RAYNES
Keyword(s):  
Nuclear Spin ◽  
Coupling Constants ◽  
Spin Coupling ◽  
Spin Coupling Constants ◽  
Spin Spin Coupling

Structural Characterization of Natural Products By Means of Quantum Chemical Calculations of NMR Parameters: New insights

2021 ◽  
Author(s):  
Fabio Luiz Paranhos Costa ◽  
Ana Carolina Ferreira de Albuquerque ◽  
Rodolfo Goetze Fiorot ◽  
Luciano Morais Lião ◽  
Lucas Haidar Martorano ◽  
...  
Keyword(s):  
Natural Products ◽  
Structural Characterization ◽  
Quantum Chemical ◽  
Chemical Shifts ◽  
Coupling Constants ◽  
Spin Coupling ◽  
Nmr Parameters ◽  
Spin Coupling Constants ◽  
Spin Spin Coupling

The calculation of NMR parameters for natural products was pioneered by Bifulco and coworkers in 2002. Since then, modelling 1H and 13C chemical shifts and spin-spin coupling constants for this...

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