- Author
-
Pugmire, R. J.
- Title
- Carbon-13 NMR Chemical Shift Tensors: What They Can Tell Us About Aromatic Structures. BFRL Fire Research Seminar. VHS Video.
- Coporate
- University of Utah, Salt Lake City
- Report
-
Video
April 28, 1999
- Keywords
-
structures
- Abstract
- Work at the University of Utah has focused on development of experimental methods for detecting less receptive nuclei with special emphasis placed on C-13 and N-15. The application of such methods to biologically important systems as well as complex hydrocarbons and their theoretical consequences are stressed. The value of chemical shifts in structure correlations in liquid samples has been very well documented and these concepts are now being developed in the shielding tensor. The 3D aspects of shielding tensors becomes one of the significant aspects of the work carried out at Utah. Solid state work on either powders or single crystals is required to obtain shielding tensors and their principal orientations in the molecular frame. Use of tensor data along with theory is advancing our understanding of the origins of chemical shielding and its use in shift/structure correlations. Shift tensor data is especially useful in the study of aromatic compounds. The data obtained on aromatic compounds with 1-5 rings will be discussed. The utilization of shift tensor data for interpreting 2-D experiments on complex hydrocarbons is promising and recent experimental developments and results will be presented.