Characterization of a Chiral Stationary Phase by HR/MAS NMR Spectroscopy and Investigation of Enantioselective Interaction with Chiral Ligates by Transferred NOE

2004 ◽  
Vol 126 (12) ◽  
pp. 3809-3816 ◽  
Author(s):  
Christine Hellriegel ◽  
Urban Skogsberg ◽  
Klaus Albert ◽  
Michael Lämmerhofer ◽  
Norbert M. Maier ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Stationary Phase ◽  
Chiral Stationary Phase ◽  
Mas Nmr ◽  
Transferred Noe

scholarly journals Efficient resolution of racemic crown-shaped cyclotriveratrylene derivatives and isolation and characterization of the intermediate saddle isomer

2019 ◽  
Vol 15 ◽  
pp. 1339-1346
Author(s):  
Sven Götz ◽  
Andreas Schneider ◽  
Arne Lützen
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Nmr Spectroscopy ◽  
High Performance ◽  
Chiral Stationary Phase ◽  
Hplc Separation ◽  
Promising Alternative ◽  
Isolation And Characterization ◽  
C Nmr

The preparative resolution of a trifunctionalized C 3-symmetrical chiral cyclotriveratrylene derivative was achieved via high-performance liquid chromatography (HPLC) on a chiral stationary phase. This approach is a promising alternative to the previously reported resolution through formation of diastereomeric esters because it involves fewer synthetic steps and is less prone to thermal (re)racemization. During these studies an intermediate saddle conformer could also be isolated and characterized by 1H and 13C NMR spectroscopy. The HPLC separation method was further developed in order to allow investigations on the racemization behavior of the cyclotriveratrylene derivative.

Structural characterization of ionomer glasses by multinuclear solid state MAS-NMR spectroscopy

2007 ◽  
Vol 353 (3) ◽  
pp. 237-243 ◽  
Author(s):  
Shigeki Matsuya ◽  
Artemis Stamboulis ◽  
Robert G. Hill ◽  
Robert V. Law
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Structural Characterization ◽  
Mas Nmr

scholarly journals On the preparation and NMR spectroscopic characterization of potassium aluminium tetrahydride KAlH4

2019 ◽  
Vol 21 (23) ◽  
pp. 12576-12584 ◽  
Author(s):  
Bodo Zibrowius ◽  
Michael Felderhoff
Keyword(s):  
Nmr Spectroscopy ◽  
Chemical Shift ◽  
Spectroscopic Characterization ◽  
Mas Nmr ◽  
Isotropic Chemical Shift ◽  
Quadrupole Coupling ◽  
Coupling Parameters

Conventional 1D 27Al MAS NMR spectroscopy allows the isotropic chemical shift and the quadrupole coupling parameters of Pnma KAlH4 to be determined precisely.

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