Ab initio and DFT study of31P-NMR chemical shifts of sphingomyelin and dihydrosphingomyelin lipid molecule

2009 ◽  
Vol 109 (15) ◽  
pp. 3685-3693 ◽  
Author(s):  
K. Sugimori ◽  
H. Kawabe ◽  
H. Nagao ◽  
K. Nishikawa
Keyword(s):  
Ab Initio ◽  
Chemical Shifts ◽  
Dft Study ◽  
Lipid Molecule ◽  
Nmr Chemical Shifts ◽  
Ab Initio And Dft

Ab Initio and DFT Study of the29Si NMR Chemical Shifts in RSi⋮SiR

2005 ◽  
Vol 24 (26) ◽  
pp. 6319-6330 ◽  
Author(s):  
Miriam Karni ◽  
Yitzhak Apeloig ◽  
Nozomi Takagi ◽  
Shigeru Nagase
Keyword(s):  
Ab Initio ◽  
Chemical Shifts ◽  
Dft Study ◽  
Nmr Chemical Shifts ◽  
Ab Initio And Dft

scholarly journals Ab Initio and DFT Study of the Conformational Energy Hypersurface of Cyclic Gly-Gly-Gly

2009 ◽  
Vol 113 (40) ◽  
pp. 10818-10825 ◽  
Author(s):  
Rodrigo D. Tosso ◽  
Miguel A. Zamora ◽  
Fernando D. Suvire ◽  
Ricardo D. Enriz
Keyword(s):  
Ab Initio ◽  
Conformational Energy ◽  
Dft Study ◽  
Energy Hypersurface ◽  
Ab Initio And Dft

Preparation, 1H and 13C NMR, and ab initio/IGLO study of mono-O-protonated deltic acid and theoretical investigation of di-, tri-, and tetra-O-protonated deltic acids

1999 ◽  
Vol 77 (5-6) ◽  
pp. 525-529 ◽  
Author(s):  
GK Surya Prakash ◽  
Golam Rasul ◽  
George A Olah ◽  
Ronghua Liu ◽  
Thomas T Tidwell
Keyword(s):  
Nmr Spectroscopy ◽  
Ab Initio ◽  
Theoretical Investigation ◽  
13C Nmr ◽  
Chemical Shifts ◽  
1H And 13C Nmr ◽  
Nmr Chemical Shifts ◽  
Molar Solution ◽  
Protonated Species ◽  
C Nmr

The hitherto elusive mono-O-protonated deltic acid C3O3H3+ was prepared by protolysis of di-tert-butoxy deltate in FSO3H-SO2ClF and in FSO3H:SbF5 (Magic Acid; 1:1 molar solution) in SO2ClF as solvent at -78°C and was characterized by 1H and 13C NMR spectroscopy. The structure and NMR chemical shifts were also calculated by the ab initio/IGLO method. No NMR evidence was found for persistent di-O-protonated deltic acid under these conditions, although a limited equilibrium with the mono-O-protonated species can be involved. Di-, tri-, and tetra-O-protonated deltic acids were also studied by ab initio/IGLO method.Key words: protonated deltic acid, aromaticity, superacids, NMR spectroscopy, ab initio and IGLO calculations.

Ab initio and DFT study of the dipole (hyper) polarizabilities of p-nitrophenylphosphine molecule

2012 ◽  
Vol 12 (4-6) ◽  
pp. 407-421
Author(s):  
Johan Urdaneta ◽  
Yaneth Bermúdez ◽  
Ricardo Bracho ◽  
Roxana Moreno ◽  
Humberto Soscún
Keyword(s):  
Ab Initio ◽  
Dft Study ◽  
Ab Initio And Dft

Ab Initio and DFT Study of the Geometric Structures and Static Dipole (Hyper)polarizabilities of Aromatic Anions

2005 ◽  
Vol 109 (45) ◽  
pp. 10380-10387 ◽  
Author(s):  
O. Castellano ◽  
Y. Bermúdez ◽  
M. Giffard ◽  
G. Mabon ◽  
N. Cubillán ◽  
...  
Keyword(s):  
Ab Initio ◽  
Dft Study ◽  
Geometric Structures ◽  
Aromatic Anions ◽  
Ab Initio And Dft
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