Carbon-13 NMR study of liquid crystal solutions. Chemical shift tensors in benzonitrile

1983 ◽  
Vol 105 (17) ◽  
pp. 5713-5714 ◽  
Author(s):  
B. M. Fung
Keyword(s):  
Liquid Crystal ◽  
Chemical Shift ◽  
Chemical Shift Tensors ◽  
Nmr Study

Phosphorus-31 chemical shift tensors of phosphinidene ligands in ruthenium carbonyl cluster compounds: A 31P single-crystal and CP/MAS-NMR study

1995 ◽  
Vol 117 (26) ◽  
pp. 6961-6969 ◽  
Author(s):  
Klaus Eichele ◽  
Roderick E. Wasylishen ◽  
John F. Corrigan ◽  
Nicholas J. Taylor ◽  
Arthur J. Carty
Keyword(s):  
Chemical Shift ◽  
Single Crystal ◽  
Mas Nmr ◽  
Cluster Compounds ◽  
Carbonyl Cluster ◽  
Chemical Shift Tensors ◽  
Nmr Study ◽  
Ruthenium Carbonyl ◽  
Cp Mas Nmr

scholarly journals A phosphorus-31 NMR study of solid carbonylhydridotris(triphenylphosphine)rhodium(I). Unusual MAS sideband intensities in second-order NMR spin systems

1992 ◽  
Vol 70 (3) ◽  
pp. 863-869 ◽  
Author(s):  
Gang Wu ◽  
Roderick E. Wasylishen ◽  
Ronald D. Curtis
Keyword(s):  
Chemical Shift ◽  
Spin System ◽  
Principal Components ◽  
Nmr Spectra ◽  
Magic Angle Spinning ◽  
Chemical Shift Tensor ◽  
Magic Angle ◽  
Nmr Spectrum ◽  
Chemical Shift Tensors ◽  
Nmr Study

The CP/MAS 31P NMR spectrum of carbonylhydridotris(triphenylphosphine)rhodium(I), RhH(CO)(PPh3)3 (1), can be described as a tightly coupled ABMX spin system (X = 103Rh). In contrast to the solution 31P NMR spectrum, the three equatorial phosphorus nuclei are nonequivalent in the solid state and this structural feature allows us to measure the two-bond spin–spin couplings, 2J(31P,31P). A new method is proposed for extracting the principal components of the chemical shift tensor from slow MAS NMR spectra in a tightly J-coupled two-spin system. For compound 1, the principal components of the 31P chemical shift tensors calculated using this method are in good agreement with those obtained from NMR spectra of a static sample. The principal components of the 31P chemical shift tensors determined for 1 are compared with those reported previously for Wilkinson's catalyst, RhCl(PPh3)3. The δ22 component of the 31P chemical shift tensors in 1 shows the largest variation with structure. This is ascribed to differences in the orientation of the P—Cipso bond about the equatorial plane of the trigonal bipyramidal structure. Keywords: rhodium–phosphine compounds, AB spin system, 31P chemical shift tensor, magic-angle spinning, molecular structure.

Carbon-13 Chemical-Shift Tensors and Relaxation Phenomena in Solid Trimethylsulfoxonium Iodide. A Single-Crystal NMR Study

1995 ◽  
Vol 114 (2) ◽  
pp. 179-187 ◽  
Author(s):  
Z. Olender ◽  
R. Poupko ◽  
Z. Luz ◽  
B. Tesche ◽  
H. Zimmerman ◽  
...  
Keyword(s):  
Chemical Shift ◽  
Single Crystal ◽  
Relaxation Phenomena ◽  
Chemical Shift Tensors ◽  
Nmr Study

scholarly journals Modeling Small Structural and Environmental Differences in Solids with 15 N NMR Chemical Shift Tensors

ChemPhysChem ◽  
2021 ◽  
Author(s):  
Luther Wang ◽  
Alexander B. Elliott ◽  
Sean D. Moore ◽  
Gregory J. O. Beran ◽  
Joshua D. Hartman ◽  
...  
Keyword(s):  
Chemical Shift ◽  
Nmr Chemical Shift ◽  
Chemical Shift Tensors

D-NMR Study on Orientation of D-Labeled Benzyl Group in PBLG Liquid Crystal

1981 ◽  
Vol 68 (1) ◽  
pp. 89-99 ◽  
Author(s):  
J. Sohma ◽  
M. Tabata ◽  
H. Toyama ◽  
T. Imanari
Keyword(s):  
Liquid Crystal ◽  
Nmr Study
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