Temperature-Jump Relaxation Magic-Angle Spinning NMR Study of the Methyltert-Butyl Ether Reaction in a Boron Pentasil Zeolite

1997 ◽  
Vol 119 (18) ◽  
pp. 4258-4262 ◽  
Author(s):  
Toralf Mildner ◽  
Horst Ernst ◽  
Dieter Freude ◽  
Wolfgang F. Hölderich
Keyword(s):  
Temperature Jump ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Butyl Ether ◽  
Nmr Study ◽  
Pentasil Zeolite ◽  
Angle Spinning

Magic Angle Spinning NMR Study on Inversion Behavior and Vacancy Disorder in Alumina-Rich Spinel

2018 ◽  
Vol 57 (14) ◽  
pp. 8390-8395 ◽  
Author(s):  
Bingtian Tu ◽  
He Zhang ◽  
Hao Wang ◽  
Weimin Wang ◽  
Zhengyi Fu
Keyword(s):  
Magic Angle Spinning ◽  
Magic Angle ◽  
Nmr Study ◽  
Angle Spinning

Phosphorus-31 chemical shieldings in a fused cis-1,2,3-benzothiadiphosphole: a dipolar NMR study

1992 ◽  
Vol 70 (4) ◽  
pp. 1229-1235 ◽  
Author(s):  
Gang Wu ◽  
Roderick E. Wasylishen ◽  
William P. Power ◽  
Graziano Baccolini
Keyword(s):  
Line Shape ◽  
Magic Angle Spinning ◽  
Pair Approximation ◽  
Magic Angle ◽  
Single Bond ◽  
Chemical Shielding ◽  
Spin Pair ◽  
Nmr Study ◽  
Shielding Tensors ◽  
Angle Spinning

Phosphorus-31 NMR static powder spectra and high-resolution magic angle spinning spectra have been obtained for a new heterocyclic compound, cis-2,10-dimethyl[1,2,3]benzothiadiphospholo[2,3b][1,2,3]benzothiadiphosphole (1), which contains a P(III)—P(III) single bond. The homonuclear 31P–31P dipolar interaction manifests itself in both the magic angle spinning spectra and the non-spinning line shape. Under the AX spin pair approximation, analysis of the spinning sidebands in the MAS experiment yields a full characterization of the two 31P chemical shielding tensors. This approximation is confirmed by the exact powder line shape simulation for a homonuclear spin pair. Analysis of the dipolar subspectra also yields the absolute sign of 1J(P,P), which is found to be negative. Keywords: phosphorus–phosphorus single bond, chemical shielding tensors, dipolar NMR, MAS, static line shape.

Solid-state 17O NMR Study of Small Biological Compounds

2007 ◽  
Vol 62 (11) ◽  
pp. 1422-1432 ◽  
Author(s):  
Kazuhiko Yamada ◽  
Tadashi Shimizu ◽  
Yoshida Mitsuru ◽  
Miwako Asanuma ◽  
Masataka Tansho ◽  
...  
Keyword(s):  
Solid State ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Multiple Quantum ◽  
Peptide Analysis ◽  
17O Nmr ◽  
Nmr Study ◽  
Biological Compounds ◽  
Nmr Tensors ◽  
Angle Spinning

We present a systematic experimental and theoretical investigation of the oxygen chemical shielding and electric-field-gradient tensors in polycrystalline amino acids and a peptide. Analysis of the 17O magic-angle-spinning (MAS), multiple-quantum MAS, and stationary nuclear magnetic resonance (NMR) spectra yield the magnitudes and the relative orientations between the two NMR tensors. The obtained 17O NMR parameters are sensitive to the hydrogen bond environments. We also demonstrate that solid-state 17O NMR is potentially useful for studying the secondary structures of peptides and proteins.

Kinetics of the hydration reactions in the cement paste with mechanochemically modified cement 29Si magic-angle-spinning NMR study

1999 ◽  
Vol 29 (10) ◽  
pp. 1575-1581 ◽  
Author(s):  
Karin Johansson ◽  
Cecilia Larsson ◽  
Oleg N. Antzutkin ◽  
Willis Forsling ◽  
Hanumantha Rao Kota ◽  
...  
Keyword(s):  
Cement Paste ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Nmr Study ◽  
Angle Spinning ◽  
Kinetics Of

13C Magic-Angle-Spinning NMR Study of the Electronic Properties of theAC60Polymers(A=K,Rb,Cs)

1996 ◽  
Vol 76 (16) ◽  
pp. 2922-2925 ◽  
Author(s):  
H. Alloul ◽  
V. Brouet ◽  
E. Lafontaine ◽  
L. Malier ◽  
L. Forro
Keyword(s):  
Electronic Properties ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Nmr Study ◽  
Angle Spinning

A high resolution1H magic angle spinning NMR study of a high-Mr subunit of wheat glutenin

Biopolymers ◽  
2000 ◽  
Vol 58 (1) ◽  
pp. 33-45 ◽  
Author(s):  
Enrica Alberti ◽  
Eberhard Humpfer ◽  
Manfred Spraul ◽  
Simon M. Gilbert ◽  
Arthur S. Tatham ◽  
...  
Keyword(s):  
Magic Angle Spinning ◽  
Magic Angle ◽  
Nmr Study ◽  
Angle Spinning

Distribution of Tetrahedral Aluminium Sites in ZSM-5 Type Zeolites:  An27Al (Multiquantum) Magic Angle Spinning NMR Study

1996 ◽  
Vol 100 (50) ◽  
pp. 19223-19226 ◽  
Author(s):  
Priit Sarv ◽  
Christian Fernandez ◽  
Jean-Paul Amoureux ◽  
Kari Keskinen
Keyword(s):  
Magic Angle Spinning ◽  
Magic Angle ◽  
Nmr Study ◽  
Angle Spinning
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