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

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.

scholarly journals Structural characterization of 13C-enriched humins and alkali-treated 13C humins by 2D solid-state NMR

2015 ◽  
Vol 17 (8) ◽  
pp. 4383-4392 ◽  
Author(s):  
Ilona van Zandvoort ◽  
Eline J. Koers ◽  
Markus Weingarth ◽  
Pieter C. A. Bruijnincx ◽  
Marc Baldus ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Solid State ◽  
Structural Characterization ◽  
Solid State Nmr ◽  
2D Nmr ◽  
Nmr Techniques ◽  
By Products

Complementary (2D) NMR techniques provide new insights into the molecular structure of humin by-products.

Suitability of Different 13C Solid-state NMR Techniques in the Characterization of Humic Acids

2002 ◽  
Vol 82 (4) ◽  
pp. 183-196 ◽  
Author(s):  
Jingdong Mao ◽  
Weiguo Hu ◽  
Guangwei Ding ◽  
Klaus Schmidt-Rohr ◽  
Geoffrey Davies ◽  
...  
Keyword(s):  
Solid State ◽  
Humic Acids ◽  
Solid State Nmr ◽  
Nmr Techniques

Efficiency of dipolar and J-derived solid-state NMR techniques for a new pair of nuclei {31P,29Si}. Towards the characterization of Si–O–P mesoporous materials

2008 ◽  
Vol 11 (4-5) ◽  
pp. 387-397 ◽  
Author(s):  
Cristina Coelho ◽  
Thierry Azais ◽  
Christian Bonhomme ◽  
Laure Bonhomme-Coury ◽  
Cédric Boissière ◽  
...  
Keyword(s):  
Solid State ◽  
Mesoporous Materials ◽  
Solid State Nmr ◽  
Nmr Techniques
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