Thank you for the replies -- I need to modify my question, because
obviously there are lots of good ways to get very good coupling constant
data.
If you are working with synthetic organic chemists, could you ask them to
what precision they need to know their coupling constants for publication?
Is it just +/-1 Hz? For example, 7.8 just as good as 8.4?
Bob
On Mon, Jul 2, 2012 at 2:42 PM, Robert Hanson <hansonr_at_stolaf.edu> wrote:
> 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
>
>
>
--
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 Tue Jul 03 2012 - 08:53:20 MST