Maybe it's better if you ask the question like this:

The chemical shift of H in benzene is 7.4 ppm. what will the resonance frequency be relative to reference TMS, at 200MHz?

The answer is 7.4 * 200 in Hz, which is the relative resonance frequency. If you want to get the absolute resonance frequency at 7.4 ppm or any other position, the key is to get the absolute frequency right for the reference TMS. You need the basic frequency parameter from the type of NMR instrument you are referring to and the chemical shift referencing method for your instrument.

Dejian (seeking Seeking new job opportunities in NMR)NMR dejian "at" gmail "dot" com

Maybe it's better if you ask the question like this:

The chemical shift of H in benzene is 7.4 ppm. what will the resonance frequency be relative to reference TMS, at 200MHz?

The answer is 7.4 * 200 in Hz, which is the relative resonance frequency. If you want to get the absolute resonance frequency at 7.4 ppm or any other position, the key is to get the absolute frequency right for the reference TMS. You need the basic frequency parameter from the type of NMR instrument you are referring to and the chemical shift referencing method for your instrument.

Seeking new Dejian

seeking job opportunities in NMR NMR

dejian "at" gmail "dot" com

Maybe it's better if you ask the question like this:

The chemical shift of H in benzene is 7.4 ppm. what will the resonance frequency be relative to reference TMS, at 200MHz?

The answer is 7.4 * 200 in unit Hz, which is the relative resonance frequency. If you want to get the absolute resonance frequency at 7.4 ppm or any other position, the key is to get the absolute frequency right for the reference TMS. You need the basic frequency parameter from the type of NMR instrument you are referring to and the chemical shift referencing method for your instrument.

Dejian

Dejian seeking job opportunities in NMR

NMR dejian "at" gmail "dot" com

Maybe it's better if you ask the question like this:

The chemical shift of H in benzene is 7.4 ppm. what will the resonance frequency be relative to reference TMS, at 200MHz?

The answer is 7.4 * 200 in unit Hz, which is the relative resonance frequency. If you want to get the absolute resonance frequency at 7.4 ppm or any other position, the key is to get the absolute frequency right for the reference TMS. You need the basic frequency parameter from the type of NMR instrument you are referring to and the chemical shift referencing method for your instrument.

Dejian Dejian

seeking new job opportunities in NMR dejian NMR (dejian "at" gmail "dot" comcom)