NMR Chemical Shifts: Updated Conventions
NMR Chemical Shifts: Updated Conventions
The recent IUPAC document on conventions for chemical shifts (Pure and Applied Chemistry73, 2001, 1795), which has been well received by the nuclear magnetic resonance (NMR) community, left a number of outstanding issues for later debate. These include (i) temperature variation of the signals for the standards, (ii) the use of magic-angle spinning for both solutions and solids, (iii) solvent effects, (iv) susceptibility measurements/ corrections, and (v) conventions for shielding tensors. These matters will now be taken up by a Task Group including R. K. Harris (chairman), E. D. Becker, S. M. Cabral de Menezes, P. Granger, and K. W. Zilm. An evening "open forum" has been arranged during the 16th International NMR Meeting on NMR Spectroscopy at the University of Cambridge, 29 June to 3 July 2003, to discuss the relevant questions.
Anyone with views or information about these issues should contact either <r.k.harris@durham.ac.uk> or <tbecker@nih.gov>.
www.iupac.org/projects/2003/2003-006-1-100.html
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Artikel in diesem Heft
- Masthead
- From the Editor
- Contents
- Vice President’s Column
- Camptothecin and Taxol
- Striving for Open Access
- Chemical Weapons Convention
- IUPAC Announces Prize Winners
- Highlights of the Executive Committee Meeting
- IUPAC Funds Three Conferences to be Held in 2004 in Developing and Disadvantaged Countries
- Bio-Unions to Pursue Science for Health and Well-Being
- Methods of Analysis and Sampling of Food Products
- IUPAC Elections
- NMR Chemical Shifts: Updated Conventions
- Terminology for Radical Polymerizations with Minimal Termination
- Toward a Core Organic Chemistry Curriculum for Latin American Universities
- Rules for Stating When a Limiting Value is Exceeded
- Provisional Recommendations
- Critical Evaluation of Stability Constants for α-Hydroxycarboxylic Acid Complexes with Protons and Metal Ions and the Accompanying Enthalpy Changes Part II: Aliphatic α-Hydroxycarboxylic Acids (IUPAC Technical Report)
- Endocrine Disruptors in the Environment (IUPAC Technical Report)
- Measurement of pH: Definition, Standards, and Procedures. (IUPAC Recommendations 2002)
- Natural Products
- Molecular Order and Mobility in Polymer Systems
- New Polymeric Materials
- The Experimental Determination of Solubilities
- Chemicals in the Atmosphere: Solubility, Sources and Reactivity
- Photochemical Purification of Water and Air
- Safety in Chemical Production
- Physiological Reference Values: A Shared Business?
- Solution Chemistry
- Multi-Component Materials
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- Bio-Based Polymers
- Solubility Phenomena
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- Mark Your Calendar
