Comments on: Diastereotopic Protons in 1H NMR Spectroscopy: Examples

By: Najeeb Ullah

Najeeb Ullah — Tue, 05 Mar 2024 03:52:23 +0000

I have faced problem i treated ethylenediamine with metal that form complex right. before complex ethylenediamine shows one triplet of CH2CH2 after complex formation its shows 2 duplets peak in different positions. So im confuse that before complexes formation the proton shows same behavior but after complex formation it shows different behavior. What is the reason please ?

By: James Ashenhurst

James Ashenhurst — Fri, 02 Dec 2022 03:02:03 +0000

In reply to AH. No, not as big as 1 ppm. That would be huge. It depends, but 0.1 to 0.2 ppm would be typical.

By: AH

AH — Thu, 01 Dec 2022 14:33:57 +0000

Thanks for the article. How distinct would the chemical shifts be? Are we talking within 1PPM, or within 5PPM for example?
Thank you.