Nuclear magnetic resonance solvent signal suppression

Nuclear magnetic resonance (NMR) spectroscopy has proven to be the most versatile technique to study organometallic compounds both non-aqueous and aqueous solutions [6, 7]. To explore all the possibilities of NMR one has to either work in DzO as solvent or use a water signal suppression technique. Proton chemical shifts can give information about the structure. Generally, protons bound to carbons coordinated to a metal center show a low-field shift, about 1-4 ppm, compared with the metal-free environment. Metal hydrides usually have negative... 

Nuclear magnetic resonance (NMR) (see Chapter 10) Although stopped flow and online results have been published, SEC-NMR coupling is still not a standard technique [2]. The use of deuterated solvents or the need to suppress the intense solvent signals by special NMR pulse sequences has limited the applicability. An additional problem is the low sensitivity of NMR in combination with the low concentrations used in SEC. 

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