This is crucial as the natural abundance of 13C is very low (about 1.109%) that usually makes 13C-NMR quite time-consuming. In fact, many NMR spectrometers below 100 MHz proton frequency do not even ...

The chemical shifts (d) of solvent signals observed for 1 H NMR and 13 C NMR spectra are listed in the following table ... Solvent Chemical Shift of H 2 O (or HOD) Acetone 2.8 Acetonitrile 2.1 Benzene ...

Common NMR active nuclei are 1H, 13C, 31P, 15N, 29Si, and many more. Nearly every element has at least one isotope that is NMR active. Since then, NMR spectroscopy has become an indespensible tool for ...

In general solid-state NMR may produce more lines than you might have expected from the liquid spectrum. There may be less symmetry than in the liquid, because internal rotations are locked in the ...

For some benchtop NMR investigations, maximizing the signal-to-noise ratio might be the difference between success and failure. The X-Pulse 130:1 (broadband/Dual-X) and 200:1 (HF) have outstanding ...

Degradation of these products and formation of benzene appear to occur when sitting on shelves at room temperature, at elevated temperatures, and when exposed to ultraviolet (UV) levels ...

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