Aza-β3-Cyclohexapeptides:  Pseudopeptidic Macrocycles with Interesting Conformational and Configurational Properties Slow Pyramidal Nitrogen Inversion in 24-Membered Rings!

2006 ◽  
Vol 71 (15) ◽  
pp. 5638-5645 ◽  
Author(s):  
Philippe Le Grel ◽  
Arnaud Salaün ◽  
Michel Potel ◽  
Barbara Le Grel ◽  
Fredéric Lassagne
Keyword(s):  
Nitrogen Inversion ◽  
Pyramidal Nitrogen Inversion

Importance of transition-state steric strain in the nitrogen inversion of hydrazines

1974 ◽  
pp. 823 ◽  
Author(s):  
Victor J. Baker ◽  
Alan R. Katritzky ◽  
Jean-Pierre Majoral ◽  
Stephen F. Nelsen ◽  
Patrick J. Hintz
Keyword(s):  
Transition State ◽  
Steric Strain ◽  
Nitrogen Inversion

Sterically hindered nitrogen inversion in five-membered cyclic hydrazines

2002 ◽  
Vol 12 (5) ◽  
pp. 189-192 ◽  
Author(s):  
Sergey V. Usachev ◽  
Grygorii A. Nikiforov ◽  
Yurii A. Strelenko ◽  
Pavel A. Belyakov ◽  
Ivan I. Chervin ◽  
...  
Keyword(s):  
Nitrogen Inversion ◽  
Sterically Hindered

Unterscheidung von Stickstoff- und Phosphor-Inversion, Rotation um die N-P-Bindung und Ligandenaustausch am Phosphor

1968 ◽  
Vol 23 (6) ◽  
pp. 759-766 ◽  
Author(s):  
D. Imbery ◽  
H. Friebolin
Keyword(s):  
Low Temperatures ◽  
Room Temperature ◽  
Nitrogen Inversion ◽  
Kinetic Processes ◽  
Derivatives Of

A large number of aminophosphines were prepared to study the kinetic processes. It could be shown that at room temperature there is rapid nitrogen-inversion but slow phosphorous-inversion. At higher temperatures ( + 80 °C), a rapid chlorine-exchange takes place with inversion of configuration at phosphorous. At low temperatures ( — 80 °C), rotation around the N-P-bond was slow. A dependence of the barrier of rotation on the size of the substituents could be recognized. It is possible that pπ-dπ-bonding is partially responsible for the relatively high barrier of rotation compared with derivatives of ethane and hydrazine.

Nitrogen inversion and N–O bond rotation in some hydroxylamine and isoxazolidine derivatives

1997 ◽  
pp. 411-418 ◽  
Author(s):  
Azfar Hassan ◽  
Mohamed I. M. Wazeer ◽  
Herman P. Perzanowski ◽  
Sk. Asrof Ali
Keyword(s):  
Bond Rotation ◽  
Nitrogen Inversion
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