AMMRL: coupling constants

From: Robert Hanson <hansonr_at_stolaf.edu>
Date: Mon, 2 Jul 2012 14:42:08 -0500

Questions:

Can someone tell me what the "standard practice" is (or maybe just how you
do it) for calculating and reporting simple proton-proton coupling
constants such as "1.2 Hz"?

Do people routinely just subtract the two peak chemical shifts in ppm +-
0.001, multiply by the spectrometer frequency, and then report that as Hz?

Do you expect reported coupling constants to be +/- 1 Hz? +/- 0.1 Hz? Does
it matter?

Bob Hanson

-- 
Robert M. Hanson
Larson-Anderson Professor of Chemistry
Chair, Chemistry Department
St. Olaf College
Northfield, MN
http://www.stolaf.edu/people/hansonr
If nature does not answer first what we want,
it is better to take what answer we get.
-- Josiah Willard Gibbs, Lecture XXX, Monday, February 5, 1900

Received on Mon Jul 02 2012 - 09:42:15 MST