Substituent effects on15N and13C NMR chemical shifts of 5-phenyl-1,3,4-oxathiazol-2-ones: a theoretical and spectroscopic study

2007 ◽  
Vol 45 (11) ◽  
pp. 985-988 ◽  
Author(s):  
J. Hodge Markgraf ◽  
Lu Hong ◽  
David P. Richardson ◽  
Mark H. Schofield
Keyword(s):  
Spectroscopic Study ◽  
Chemical Shifts ◽  
Substituent Effects ◽  
Nmr Chemical Shifts

Substituent effects on15N and13C NMR chemical shifts of 3-phenylisoxazoles: a theoretical and spectroscopic study

2006 ◽  
Vol 44 (9) ◽  
pp. 851-855 ◽  
Author(s):  
Mark H. Schofield ◽  
Marie-Adele Sorel ◽  
Ryan J. Manalansan ◽  
David P. Richardson ◽  
J. Hodge Markgraf
Keyword(s):  
Spectroscopic Study ◽  
Chemical Shifts ◽  
Substituent Effects ◽  
Nmr Chemical Shifts

Substituent Effects on 31P NMR Chemical Shifts and 1JP–Se of triarylselenophosphates

2010 ◽  
Vol 185 (4) ◽  
pp. 772-784 ◽  
Author(s):  
Zaira Domínguez ◽  
Javier Hernández ◽  
Lorena Silva-Gutiérrez ◽  
Magali Salas-Reyes ◽  
Mario Sánchez ◽  
...  
Keyword(s):  
31P Nmr ◽  
Chemical Shifts ◽  
Substituent Effects ◽  
Nmr Chemical Shifts

scholarly journals Substituenteneinflüsse auf die 13C–NMR-chemischen Verschiebungen cis- und trans-konfigurierter Trimethincyanine / Substituent Effects on the 13C NMR Chemical Shifts of Trimethincyanines with cis and trans Configuration

1976 ◽  
Vol 31 (12) ◽  
pp. 1641-1645 ◽  
Author(s):  
Walter Grahn
Keyword(s):  
13C Nmr ◽  
Chemical Shifts ◽  
Substituent Effects ◽  
Electron Systems ◽  
Coupling Constant ◽  
Electronic Effects ◽  
Nmr Chemical Shifts ◽  
Monosubstituted Benzenes ◽  
Cis And Trans ◽  
C Nmr

The 13C NMR chemical shifts of fifteen 6 substituted 2,3-dihydro-1,4-diazepinium salts (cis trimethincyanines) (1) and twelve 2 substituted bis(dimethylamino)trimethinium salts (trans trimethincyanines) (2) have been determined. A comparison of the substituentinduced shifts (13C SCS) of 1 and 2 allows no distinction between steric and electronic effects. In the three 6 п-electron systems 1, 2 and monosubstituted benzenes the 13C SCS are similar for the substituent bearing carbon atoms. A surprisingly large 4JFCCNC coupling constant has been observed.

Die Weiterleitung von substituenten- induzierten 13C-NMR-chemischen. Verschiebungen in para-substituierten 3-Phenylpropansäure-methylestern / The Transmission of Substituent-Induced 13C NMR Chemical Shifts in para-Substituted 3-Phenyl Propanoic Acid Methyl Esters

1980 ◽  
Vol 35 (7) ◽  
pp. 934-936 ◽  
Author(s):  
R. Radeglia ◽  
S. L. Spassov ◽  
R. Stefanova ◽  
S. D. Sofia
Keyword(s):  
13C Nmr ◽  
Chemical Shifts ◽  
Methyl Esters ◽  
Substituent Effects ◽  
Side Chain ◽  
Parameter Method ◽  
Propanoic Acid ◽  
Nmr Chemical Shifts ◽  
13C Nmr Chemical Shifts ◽  
Acid Methyl

Carbon-13 chemical shifts have been measured of para-substituted 3-phenyl propanoic acid methyl esters. The substituent-induced 13C shifts of the side chain were related to Hammett substituent effects by the dual substituent parameter method. The transmission of substituent effects and the factors that influence 13C shifts are discussed

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