1 H NMR spectra of NBR specimens exposed to 100 MPa hydrogen gas at 303 K for 24 h in a sealed sample tube equipped with a solution probe. (1-a) Liquid-phase 1 H NMR spectra of crude NBR in CDCl 3 ...

Representative 1 H NMR spectrum of 1-octene (top) and undecane (bottom) in CDCl 3. The integration regions used in the equation above, namely I (Sample) and I (HMDSO), are highlighted. Image Credit: ...

The molecule’s 1D 1 H NMR spectrum shows six resonances (see Figure 2, bottom). Figure 2. The structure (top) and 1D 1 H spectrum (bottom) of trans-2-hexenoic acid. Hydrogen positions on the carbon ...

Figure 5 provides an example of a proton (1 H) NMR spectrum, meaning that only the protons of the molecule are detected. Figure 5: 1 H solution NMR spectrum of acetic acid. The signals correspond to ...

Figure 5 provides an example of a proton (1 H) NMR spectrum, meaning that only the protons of the molecule are detected. Figure 5: 1 H solution NMR spectrum of acetic acid. The signals correspond to ...

By using this high-resolution two-dimensional 1H CRAMPS solid-state NMR they obtained a spectrum for a tablet formulation in less than 2 hours, ...

The chemical shifts (d) of solvent signals observed for 1 H NMR and 13 C NMR spectra are listed in the following table. The multiplicity is shown in parentheses as 1 for singlet, 2 for doublet, 3 for ...

1 H NMR Sensitivity. NMR spectroscopy may theoretically appear less sensitive than other frequently employed analytic approaches, but in practice, particularly when studying small organic molecule ...

Using the pulsed NMR minispec instead of the origi­nal cw-NMR instruments can ful­fill and even exceed the ASTM methods D 4808 and D 3701. The pulsed NMR method is faster, more accurate and more ...

As a training set, we used 500,000 artificially generated 1 H NMR spectra. We used different base frequencies (from 80 to 800 MHz) to generate spectra, as well as a wide range of signal-to-noise ...