NMR study of proton transfer equilibrium in Schiff bases derived from 2-hydroxy-1-naphthaldehyde and 1-hydroxy-2-acetonaphthone. Deuterium isotope effects on13C and15N chemical shifts

2001 ◽  
Vol 39 (S1) ◽  
pp. S67-S80 ◽  
Author(s):  
T. Dziembowska ◽  
Z. Rozwadowski ◽  
A. Filarowski ◽  
P. E. Hansen
Keyword(s):  
Proton Transfer ◽  
Schiff Bases ◽  
Chemical Shifts ◽  
Isotope Effects ◽  
Nmr Study ◽  
Deuterium Isotope Effects

One-bond deuterium isotope effects on 15N chemical shifts in Schiff bases

1998 ◽  
Vol 102 (3) ◽  
pp. 410-413 ◽  
Author(s):  
Poul Erik Hansen ◽  
Jerzy Sitkowski ◽  
Lech Stefaniak ◽  
Zbigniew Rozwadowski ◽  
Teresa Dziembowska
Keyword(s):  
Schiff Bases ◽  
Chemical Shifts ◽  
Isotope Effects ◽  
Deuterium Isotope Effects

Factor Analysis of Deuterium Isotope Effects on13C NMR Chemical Shifts in Schiff Bases

2005 ◽  
Vol 11 (16) ◽  
pp. 4758-4766 ◽  
Author(s):  
Paulina M. Dominiak ◽  
Aleksander Filarowski ◽  
Poul Erik Hansen ◽  
Krzysztof Woźniak
Keyword(s):  
Factor Analysis ◽  
Schiff Bases ◽  
Chemical Shifts ◽  
Isotope Effects ◽  
Nmr Chemical Shifts ◽  
Deuterium Isotope Effects

scholarly journals Deuterium Isotope Effects on 14,15N Chemical Shifts of Ammonium Ions: A Solid State NMR Study

2011 ◽  
Vol 2011 ◽  
pp. 1-4
Author(s):  
Poul Erik Hansen
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Chemical Shifts ◽  
Isotope Effects ◽  
Natural Abundance ◽  
Ammonium Ions ◽  
Fast Rotation ◽  
Nmr Study ◽  
Ammonium Halides ◽  
Deuterium Isotope Effects

Deuterium isotope effects on N14,15 chemical shifts are measured in ammonium halides in the solid state using both enriched N15 salts and N14 natural abundance materials. The effects are correlated to N15 chemical shifts and to N···X distances. The deuterium isotope effects on N14,15 chemical shifts in the solid state are discussed in relation to effects observed in solution. No NH couplings are seen due to fast rotation in the solid, which leads to self-decoupling, whereas ND couplings are present.

Deuterium isotope effects on15N chemical shifts of double Schiff bases in the solid state and solution

2003 ◽  
Vol 41 (2) ◽  
pp. 135-138 ◽  
Author(s):  
T. Dziembowska ◽  
K. Ambroziak ◽  
Z. Rozwadowski ◽  
W. Schilf ◽  
B. Kamie?ski
Keyword(s):  
Solid State ◽  
Schiff Bases ◽  
Chemical Shifts ◽  
Isotope Effects ◽  
Deuterium Isotope Effects

Tautomerism of Sterically Hindered Schiff Bases. Deuterium Isotope Effects on13C Chemical Shifts

2005 ◽  
Vol 109 (20) ◽  
pp. 4464-4473 ◽  
Author(s):  
A. Filarowski ◽  
A. Koll ◽  
M. Rospenk ◽  
I. Krol-Starzomska ◽  
P. E. Hansen
Keyword(s):  
Schiff Bases ◽  
Chemical Shifts ◽  
Isotope Effects ◽  
Deuterium Isotope Effects ◽  
Sterically Hindered
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