Determination of the relative signs of2J(31P–31P) in complexes of tungsten(0) and molybdenum(0) using two-dimensional [31P–31P]-COSY-45 nuclear magnetic resonance chemical shift correlation

1987 ◽  
pp. 2401-2405 ◽  
Author(s):  
Xavier L. R. Fontaine ◽  
John D. Kennedy ◽  
Bernard L. Shaw ◽  
José M. Vila
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Chemical Shift ◽  
Two Dimensional ◽  
Chemical Shift Correlation ◽  
Nuclear Magnetic

An improved route to pregna-5,20-dien-3β-ol (muricin aglycone): Carbon and proton nuclear magnetic resonance assignments for the aglycone and a number of related pregnene derivatives

1987 ◽  
Vol 65 (3) ◽  
pp. 666-669 ◽  
Author(s):  
R. D. Dawe ◽  
J. L. C. Wright
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Chemical Shift ◽  
Resonance Assignments ◽  
Proton Nuclear Magnetic Resonance ◽  
Two Dimensional ◽  
Chemical Shift Correlation ◽  
Heteronuclear Chemical Shift ◽  
Nuclear Magnetic

Carbon and proton assignments for muricin aglycone (5) and a number of related pregnenes, carried out with the aid of two-dimensional homo- and heteronuclear chemical shift correlation experiments, have resulted in previously reported carbon assignments for the aglycone being revised. An improved route to muricin aglycone is also reported.

Determination of for aliphatic ketones from nuclear magnetic resonance chemical shift data

1970 ◽  
Vol 48 (12) ◽  
pp. 1919-1923 ◽  
Author(s):  
Donald G. Lee
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Raman Spectroscopy ◽  
Magnetic Resonance ◽  
Chemical Shift ◽  
Aliphatic Ketones ◽  
Chemical Shift Data ◽  
Shift Data ◽  
Good Agreement ◽  
Nuclear Magnetic

The [Formula: see text] values for 3-pentanone, 2-butanone, and 3-methyl-2-butanone have been determined from chemical shift data. The values (−7.6, −7.1, and −7.2, respectively) are in good agreement with those previously determined for aliphatic ketones by use of ultraviolet–visible and Raman spectroscopy.

DETERMINATION OF α OR β SUBSTITUTION OF THE INDOLE NUCLEUS BY NUCLEAR MAGNETIC RESONANCE

1963 ◽  
Vol 41 (8) ◽  
pp. 2067-2073 ◽  
Author(s):  
R. V. Jardine ◽  
R. K. Brown
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Chemical Shift ◽  
Solvent Effect ◽  
Polar Solvents ◽  
Nuclear Magnetic

Marked differences in chemical shift of the signal for the α proton in indole and substituted indoles occur when spectra are obtained in non-polar and polar solvents. In contrast, using polar and non-polar solvents, only small differences are observed in the chemical shift of the signal for the β proton in indoles. The utility of the solvent effect on the chemical shift to distinguish between α and β substitution of the indole nucleus is pointed out.

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