Long-Range Deuterium Isotope Effects on13C Chemical Shifts of Intramolecularly Hydrogen-Bonded N-Substituted 3-(Cycloamine)thiopropionamides or Amides:  A Case of Electric Field Effects

2007 ◽  
Vol 72 (11) ◽  
pp. 4108-4116 ◽  
Author(s):  
Jacek G. Sośnicki ◽  
Morten Langaard ◽  
Poul Erik Hansen
Keyword(s):  
Electric Field ◽  
Long Range ◽  
Chemical Shifts ◽  
Isotope Effects ◽  
Electric Field Effects ◽  
Field Effects ◽  
Deuterium Isotope Effects ◽  
Hydrogen Bonded

Hydrogen/Deuterium-Isotope Effects on NMR Chemical Shifts and Symmetry of Homoconjugated Hydrogen-Bonded Ions in Polar Solution

2000 ◽  
Vol 122 (51) ◽  
pp. 12878-12879 ◽  
Author(s):  
Parwin Schah-Mohammedi ◽  
Ilja G. Shenderovich ◽  
Carsten Detering ◽  
Hans-Heinrich Limbach ◽  
Peter M. Tolstoy ◽  
...  
Keyword(s):  
Chemical Shifts ◽  
Isotope Effects ◽  
Polar Solution ◽  
Nmr Chemical Shifts ◽  
Hydrogen Deuterium ◽  
Deuterium Isotope Effects ◽  
Hydrogen Bonded

scholarly journals The role of electric field, peripheral chains, and magnetic effects on significant 1H upfield shifts of the encapsulated molecules in chalcogen-bonded capsules

2021 ◽  
Vol 23 (35) ◽  
pp. 19647-19658
Author(s):  
Demeter Tzeli ◽  
Ioannis D. Petsalakis ◽  
Giannoula Theodorakopoulos ◽  
Faiz-Ur Rahman ◽  
Yang Yu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electric Field ◽  
Chemical Shifts ◽  
Electric Field Effects ◽  
Magnetic Effects ◽  
Field Effects ◽  
Equal Importance

Significant 1H upfield chemical shifts of the guests in the capsules are consequences of polarizability of chalcogens, electric field effects and peripheral chains. The effects of the electric field and of magnetic field are of equal importance.

Substituent-induced 1H chemical shifts for 4-substituted (2, 2-dichlorocyclopropyl)benzenes: further evidence for intramolecular electric field effects on 1H chemical shifts

1977 ◽  
Vol 55 (3) ◽  
pp. 530-535 ◽  
Author(s):  
Robert H. Kohler ◽  
William F. Reynolds
Keyword(s):  
Electric Field ◽  
Field Effect ◽  
Ring Current ◽  
Chemical Shifts ◽  
Basic Pattern ◽  
Electric Field Effects ◽  
Field Effects ◽  
The Individual ◽  
Induced Changes ◽  
Proton Chemical Shifts

Correlations of cyclopropyl proton chemical shifts for 4-substituted (2,2-dichlorocyclopropyl)-benzenes with σI and σR0 provide evidence that these chemical shifts reflect direct field effects and weak phenyl–cyclopropyl conjugative interactions. Corrections for variable ring current effects due to substituent-induced changes in conformation improve the individual correlations but do not alter the basic pattern of results. Correlation of the β cyclopropyl 1H chemical shift difference with σI with calculated hydrogen electron densities, and with calculated electric field components provides further strong evidence for a field effect on 1H chemical shifts.

Evidence for remote hyperconjugation through the long range deuterium isotope effects on carbon-13 chemical shifts

1992 ◽  
Vol 33 (48) ◽  
pp. 7441-7444 ◽  
Author(s):  
Vladimir Vinković ◽  
Kata Mlinarić-Majerski ◽  
Željko Marinić
Keyword(s):  
Long Range ◽  
Chemical Shifts ◽  
Isotope Effects ◽  
Deuterium Isotope Effects
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