t1-Noise Suppression by γ-Free Recoupling Sequences in Solid-State NMR for Structural Characterization of Fully Protonated Molecules at Fast MAS

2020 ◽  
Vol 124 (48) ◽  
pp. 26332-26343
Author(s):  
Yusuke Nishiyama ◽  
Vipin Agarwal ◽  
Rongchun Zhang
Keyword(s):  
Solid State ◽  
Structural Characterization ◽  
Solid State Nmr ◽  
Noise Suppression ◽  
Fast Mas ◽  
Protonated Molecules

Rapid Characterization of Formulated Pharmaceuticals Using Fast MAS 1H Solid-State NMR Spectroscopy

2019 ◽  
Vol 16 (7) ◽  
pp. 3121-3132 ◽  
Author(s):  
David A. Hirsh ◽  
Anuradha V. Wijesekara ◽  
Scott L. Carnahan ◽  
Ivan Hung ◽  
Joseph W. Lubach ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Solid State Nmr ◽  
Solid State Nmr Spectroscopy ◽  
Fast Mas ◽  
Rapid Characterization

scholarly journals Solid-State NMR Techniques for the Structural Characterization of Cyclic Aggregates Based on Borane–Phosphane Frustrated Lewis Pairs

Molecules ◽  
2020 ◽  
Vol 25 (6) ◽  
pp. 1400 ◽  
Author(s):  
Robert Knitsch ◽  
Melanie Brinkkötter ◽  
Thomas Wiegand ◽  
Gerald Kehr ◽  
Gerhard Erker ◽  
...  
Keyword(s):  
Solid State ◽  
Structural Characterization ◽  
Solid State Nmr ◽  
Magic Angle ◽  
Frustrated Lewis Pairs ◽  
Wide Range ◽  
Nmr Techniques ◽  
Nmr Methods ◽  
Lewis Pairs

Modern solid-state NMR techniques offer a wide range of opportunities for the structural characterization of frustrated Lewis pairs (FLPs), their aggregates, and the products of cooperative addition reactions at their two Lewis centers. This information is extremely valuable for materials that elude structural characterization by X-ray diffraction because of their nanocrystalline or amorphous character, (pseudo-)polymorphism, or other types of disordering phenomena inherent in the solid state. Aside from simple chemical shift measurements using single-pulse or cross-polarization/magic-angle spinning NMR detection techniques, the availability of advanced multidimensional and double-resonance NMR methods greatly deepened the informational content of these experiments. In particular, methods quantifying the magnetic dipole–dipole interaction strengths and indirect spin–spin interactions prove useful for the measurement of intermolecular association, connectivity, assessment of FLP–ligand distributions, and the stereochemistry of adducts. The present review illustrates several important solid-state NMR methods with some insightful applications to open questions in FLP chemistry, with a particular focus on supramolecular associates.

Structural Characterization of AgI–AgPO3–Ag2WO4 Superionic Conducting Glasses by Advanced Solid-State NMR Techniques

2017 ◽  
Vol 121 (25) ◽  
pp. 13823-13832 ◽  
Author(s):  
Mickaël Blais-Roberge ◽  
Silvia H. Santagneli ◽  
Sandra H. Messaddeq ◽  
Maxime Rioux ◽  
Yannick Ledemi ◽  
...  
Keyword(s):  
Solid State ◽  
Structural Characterization ◽  
Solid State Nmr ◽  
Nmr Techniques

Structural characterization of an anhydrous polymorph of paclitaxel by solid-state NMR

2007 ◽  
Vol 9 (46) ◽  
pp. 6083 ◽  
Author(s):  
Elizabeth M. Heider ◽  
James K. Harper ◽  
David M. Grant
Keyword(s):  
Solid State ◽  
Structural Characterization ◽  
Solid State Nmr
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