Combination of X-ray photoelectron and solid-state 13C nuclear magnetic resonance spectroscopy in the structural characterisation of humic acids

2000 ◽  
Vol 424 (2) ◽  
pp. 243-255 ◽  
Author(s):  
Fanny Monteil-Rivera ◽  
Eric B. Brouwer ◽  
Sonia Masset ◽  
Yves Deslandes ◽  
Jacques Dumonceau
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Solid State ◽  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Nuclear Magnetic Resonance Spectroscopy ◽  
Humic Acids ◽  
Resonance Spectroscopy ◽  
X Ray ◽  
Structural Characterisation ◽  
13C Nuclear Magnetic Resonance

Étude radiocristallographique comparée de quelques Δ-2 imidazolines substituées

1987 ◽  
Vol 65 (9) ◽  
pp. 2217-2222 ◽  
Author(s):  
Pierre Brouant ◽  
Jacques Barbe ◽  
Alain Marsura ◽  
Catherine Soula ◽  
Cuong Luu-Duc
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Solid State ◽  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Nuclear Magnetic Resonance Spectroscopy ◽  
Spatial Orientation ◽  
Close Agreement ◽  
Resonance Spectroscopy ◽  
X Ray ◽  
Solid State Structures

The solid state structures of three compounds belonging to the Δ-2 imidazoline series have been compared. X-ray data and molecular parameters are given. It is noteworthy to point out that substituents are trans to one another in these structures. Moreover, the spatial orientation of the carbonyl group attached to C(4) depends on the nature of the substituent attached to nitrogen N(3). In addition, results are in close agreement with those of nuclear magnetic resonance spectroscopy.

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