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Chemistry Forums for Students => Organic Chemistry Forum => Organic Spectroscopy => Topic started by: Chan on January 24, 2016, 11:39:56 AM

Title: Chemical shift of ATP in P-31 NMR
Post by: Chan on January 24, 2016, 11:39:56 AM

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Can anyone explain the chemical shifts of α,β and γ ¹³P in adenosine triphosphate (ATP)?
Ignore the phosphocreatine peak.

Title: Re: Chemical shift of ATP in P-31 NMR
Post by: Irlanur on January 24, 2016, 12:29:13 PM

What would you accept as an explanation? The first and probably most important hint would be that the electron density nearly plays no role at all. The biggest influence comes from "paramagnetic shielding" terms.

Title: Re: Chemical shift of ATP in P-31 NMR
Post by: Babcock_Hall on February 03, 2016, 03:56:45 PM

One helpful thing to keep in mind with phosphorus NMR is that groups in the gamma position tend to bring about an upfield shift.