Effect of centrifugal distortion and anharmonic vibration on the chemical shielding of 31P in PH3 and PD3

1978 ◽  
Vol 69 (2) ◽  
pp. 615-621 ◽  
Author(s):  
Cynthia J. Jameson ◽  
A. Keith Jameson
Keyword(s):  
Centrifugal Distortion ◽  
Chemical Shielding ◽  
Anharmonic Vibration

An Experimental and Theoretical Investigation of the Chemical Shielding Tensors of13Cαof Alanine, Valine, and Leucine Residues in Solid Peptides and in Proteins in Solution

2001 ◽  
Vol 123 (42) ◽  
pp. 10362-10369 ◽  
Author(s):  
Robert H. Havlin ◽  
David D. Laws ◽  
Hans-Marcus L. Bitter ◽  
Lori K. Sanders ◽  
Haihong Sun ◽  
...  
Keyword(s):  
Theoretical Investigation ◽  
Chemical Shielding ◽  
Shielding Tensors

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.

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