The concentration dependence of the chemical shift for the fused mobile-proton peak in a fast-exchange system

1984 ◽  
Vol 20 (1) ◽  
pp. 98-100
Author(s):  
V. V. Turov ◽  
V. K. Pogorelyi
Keyword(s):  
Chemical Shift ◽  
Concentration Dependence ◽  
Mobile Proton ◽  
Exchange System ◽  
Fast Exchange ◽  
Proton Peak

NMR Study of Miscibility in Polyepichlorohydrin/Poly(Vinylmethylether) Blends

1994 ◽  
Vol 67 (4) ◽  
pp. 629-635 ◽  
Author(s):  
K. J. McGrath ◽  
C. M. Roland
Keyword(s):  
Glass Transition ◽  
Nmr Spectroscopy ◽  
Chemical Shift ◽  
Glass Transition Temperatures ◽  
129Xe Nmr ◽  
Nmr Study ◽  
Miscible Blends ◽  
Fast Exchange ◽  
Exchange Regime ◽  
Fast Exchange Regime

Abstract 129Xe NMR spectroscopy is employed to demonstrate that polyepichlorohydrin and poly(vinylmethylether), which have virtually equal glass transition temperatures, form thermodynamically miscible blends. This conclusion is drawn from the appearance of a single resonance in the blend spectrum, at a chemical shift differing from that calculated for the fast exchange regime. 13C NMR results are consistent with thermodynamic miscibility, and reflect the similarity of the component dynamics.

Solvent and concentration dependence of the hydroxyl chemical shift of methanol

1998 ◽  
Vol 93 (1) ◽  
pp. 145-151 ◽  
Author(s):  
M.A. WENDT ◽  
J. MEILER ◽  
F. WEINHOLD ◽  
T.C. FARRAR
Keyword(s):  
Chemical Shift ◽  
Concentration Dependence

55Mn NMR Studies in Aqueous Permanganate Solutions

1974 ◽  
Vol 29 (10) ◽  
pp. 1467-1470 ◽  
Author(s):  
O. Lutz ◽  
W. Steinkilberg
Keyword(s):  
Chemical Shift ◽  
Aqueous Solutions ◽  
Concentration Dependence ◽  
Magnetic Moment ◽  
Infinite Dilution ◽  
High Accuracy ◽  
Solvent Isotope Effect ◽  
Nmr Studies ◽  
Solvent Isotope ◽  
Nmr Signals

Abstract The NMR signals of the nuclei 55Mn and 2H have been investigated in aqueous solutions of permanganates. The concentration dependence of the NMR signals of 55Mn has been determined in potassium permanganate solutions in H2O and D2O and a large solvent isotope effect on the chemical shift of 55Mn has been established. The ratio of the Larmor frequencies of 55Mn relative to 2H has been measured with high accuracy. Using the concentration dependence, the ratio of the Larmor frequencies of 55Mn for infinite dilution relative to 2H in pure D2O is given. From this ratio a magnetic moment for 55Mn in the permanganate ion has been derived.

Solvent and concentration dependence of the hydroxyl chemical shift of methanol

1998 ◽  
Vol 93 (1) ◽  
pp. 145-152 ◽  
Author(s):  
M. A. WENDT J. MEILER F. WEINHOLD T
Keyword(s):  
Chemical Shift ◽  
Concentration Dependence
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