Applications of high field solid state NMR techniques to examine problems in geochemistry

2006 ◽  
Vol 70 (18) ◽  
pp. A600
Author(s):  
M.E. Smith ◽  
A.P. Howes ◽  
S.C. Kohn ◽  
B.M. Roome ◽  
S. Couch ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
High Field ◽  
Nmr Techniques

ChemInform Abstract: Solid-State NMR Techniques in Oriented Systems

ChemInform ◽  
2010 ◽  
Vol 23 (43) ◽  
pp. no-no
Author(s):  
K. V. RAMANATHAN ◽  
B. S. ARUNKUMAR ◽  
N. SURYAPRAKASH ◽  
R. PRATIMA ◽  
C. L. KHETRAPAL
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Nmr Techniques

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

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.

SPINAL modulated decoupling in high field double- and triple-resonance solid-state NMR experiments on stationary samples

2005 ◽  
Vol 177 (2) ◽  
pp. 197-202 ◽  
Author(s):  
Neeraj Sinha ◽  
Christopher V. Grant ◽  
Chin H. Wu ◽  
Anna A. De Angelis ◽  
Stanley C. Howell ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
High Field ◽  
Triple Resonance

scholarly journals Probing the interaction of U(vi) with phosphonate-functionalized mesoporous silica using solid-state NMR spectroscopy

2016 ◽  
Vol 45 (25) ◽  
pp. 10447-10458 ◽  
Author(s):  
Eva C. Uribe ◽  
Harris E. Mason ◽  
Jennifer A. Shusterman ◽  
Anthony Bruchet ◽  
Heino Nitsche
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Mesoporous Silica ◽  
Solid State Nmr ◽  
Solid State Nmr Spectroscopy ◽  
Functionalized Mesoporous Silica ◽  
Nmr Techniques ◽  
Contact Experiments

Solid-state NMR techniques combined with batch contact experiments elucidate how U(vi) binds to phosphonate-functionalized mesoporous silica.

Solid State NMR Studies of the Adsorbed States of Formic Acid on Y Zeolites

1980 ◽  
Vol 3 ◽  
Author(s):  
T. Michael Duncan ◽  
Robert W. Vaughan
Keyword(s):  
Solid State ◽  
Formic Acid ◽  
Solid State Nmr ◽  
Double Resonance ◽  
Chemical Shift Anisotropy ◽  
Surface States ◽  
Cross Polarization ◽  
Nmr Studies ◽  
Y Zeolites ◽  
Nmr Techniques

ABSTRACTSeveral multiple-pulse double-resonance NMR techniques have been applied to isolate and characterize the spectra of the adsorbed states of formic acid on two Y zeolites. The two surface states, bidentatT3 and ynidentate, possess different motional properties and 13C - H cross-polarization techniques may be used to separate the spectra. The 13C chemical shift anisotropy is founa to iorrelate with the symmetry of the formate species. The H spectrum of the carbonyl hydrogen, selectively observed with the dipolardifference method, indicates that this hydrogen becomes more acidic upon adsorption.

Synergic Effect of Active Sites in Zinc-Modified ZSM-5 Zeolites as Revealed by High-Field Solid-State NMR Spectroscopy

2016 ◽  
Vol 128 (51) ◽  
pp. 16058-16062 ◽  
Author(s):  
Guodong Qi ◽  
Qiang Wang ◽  
Jun Xu ◽  
Julien Trébosc ◽  
Olivier Lafon ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Solid State Nmr ◽  
High Field ◽  
Active Sites ◽  
Synergic Effect ◽  
Solid State Nmr Spectroscopy
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