Correct determination of aluminium in Y zeolites by magic-angle spinning n.m.r. spectroscopy

1987 ◽  
pp. 1688 ◽  
Author(s):  
P. J. Grobet ◽  
H. Geerts ◽  
J. A. Martens ◽  
P. A. Jacobs
Keyword(s):  
Magic Angle Spinning ◽  
Magic Angle ◽  
Y Zeolites ◽  
Correct Determination ◽  
Angle Spinning

scholarly journals Efficient polynomial analysis of magic-angle spinning sidebands and application to order parameter determination in anisotropic samples

2021 ◽  
Vol 2 (2) ◽  
pp. 589-606
Author(s):  
Günter Hempel ◽  
Paul Sotta ◽  
Didier R. Long ◽  
Kay Saalwächter
Keyword(s):  
Chemical Shift ◽  
Magic Angle Spinning ◽  
Parameter Determination ◽  
Magic Angle ◽  
Chemical Shift Tensors ◽  
Line Shapes ◽  
Fitting Procedure ◽  
The Common ◽  
Angle Spinning

Abstract. Chemical shift tensors in 13C solid-state NMR provide valuable localized information on the chemical bonding environment in organic matter, and deviations from isotropic static-limit powder line shapes sensitively encode dynamic-averaging or orientation effects. Studies in 13C natural abundance require magic-angle spinning (MAS), where the analysis must thus focus on spinning sidebands. We propose an alternative fitting procedure for spinning sidebands based upon a polynomial expansion that is more efficient than the common numerical solution of the powder average. The approach plays out its advantages in the determination of CST (chemical-shift tensor) principal values from spinning-sideband intensities and order parameters in non-isotropic samples, which is here illustrated with the example of stretched glassy polycarbonate.

Determination of methyl order parameters using solid state NMR under off magic angle spinning

2019 ◽  
Vol 73 (8-9) ◽  
pp. 471-475 ◽  
Author(s):  
Kai Xue ◽  
Salvatore Mamone ◽  
Benita Koch ◽  
Riddhiman Sarkar ◽  
Bernd Reif
Keyword(s):  
Solid State ◽  
Solid State Nmr ◽  
Magic Angle Spinning ◽  
Order Parameters ◽  
Magic Angle ◽  
Angle Spinning

Determination of aromatic hydrocarbon fraction in oil shale by 13C n.m.r. with magic-angle spinning

Fuel ◽  
1978 ◽  
Vol 57 (8) ◽  
pp. 450-454 ◽  
Author(s):  
Henry A. Resing ◽  
Allen N. Garroway ◽  
Robert N. Hazlett
Keyword(s):  
Aromatic Hydrocarbon ◽  
Oil Shale ◽  
Magic Angle Spinning ◽  
Hydrocarbon Fraction ◽  
Magic Angle ◽  
Angle Spinning

Structural Properties of a Dimeric Phenylcyanamidocopper(I) Complex, [{Cu(PPh3)2(C6H5NCN)}2]

2000 ◽  
Vol 53 (12) ◽  
pp. 971 ◽  
Author(s):  
Eric W. Ainscough ◽  
Andrew M. Brodie ◽  
Peter C. Healy ◽  
Joyce M. Waters
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Structural Properties ◽  
Structure Determination ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Cross Polarization ◽  
X Ray ◽  
Angle Spinning

The X-ray crystal structure determination of bis[-(phenylcyanamido)bis(triphenylphosphine)copper(I)], [{Cu(PPh3)2(C6H5NCN)}2], (1) is reported. The complex has a centrosymmetric dimeric structure with the phenylcyanamide ligands bridging the copper atoms in a -1,3-fashion. The structure is compared with that of the 4-methylphenylcyanamido complex, [{Cu(PPh3)2(4-MeC6H4NCN)}2] (2), and the differences observed in the Cu–P bond lengths compared with changes in the solid state 31P cross-polarization magic-angle spinning (CPMAS) spectra of the two complexes.

DIRECT DETERMINATION OF CATION DISORDER IN MgAl2O4SPINEL BY HIGH-RESOLUTION27Al MAGIC-ANGLE-SPINNING NMR SPECTROSCOPY

1985 ◽  
Vol 14 (6) ◽  
pp. 771-774 ◽  
Author(s):  
G. C. Gobbi ◽  
R. Christoffersen ◽  
M. T. Otten ◽  
B. Miner ◽  
P. R. Buseck ◽  
...  
Keyword(s):  
Nmr Spectroscopy ◽  
Direct Determination ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Cation Disorder ◽  
Angle Spinning

scholarly journals Accurate Determination of Interstrand Distances and Alignment in Amyloid Fibrils by Magic Angle Spinning NMR

2010 ◽  
Vol 114 (42) ◽  
pp. 13555-13561 ◽  
Author(s):  
Marc A. Caporini ◽  
Vikram S. Bajaj ◽  
Mikhail Veshtort ◽  
Anthony Fitzpatrick ◽  
Cait E. MacPhee ◽  
...  
Keyword(s):  
Amyloid Fibrils ◽  
Accurate Determination ◽  
Magic Angle Spinning ◽  
Magic Angle ◽  
Angle Spinning

scholarly journals Magic Angle Spinning NMR Structure Determination of Proteins from Pseudocontact Shifts

2013 ◽  
Vol 135 (22) ◽  
pp. 8294-8303 ◽  
Author(s):  
Jianping Li ◽  
Kala Bharath Pilla ◽  
Qingfeng Li ◽  
Zhengfeng Zhang ◽  
Xuncheng Su ◽  
...  
Keyword(s):  
Structure Determination ◽  
Magic Angle Spinning ◽  
Nmr Structure ◽  
Magic Angle ◽  
Pseudocontact Shifts ◽  
Nmr Structure Determination ◽  
Angle Spinning
Sign in / Sign up

Export Citation Format

Share Document