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 ...

Unfortunately, many 1H-NMR spectra are severely overlapped due to the multiplet structure caused by homo-nuclear scalar couplings. "Pure shift" NMR spectra, also known as broadband homonuclear ...

This magnetic field makes the possible spin-states of the nucleus differ in energy, and using NMR techniques the spins can be made to create observable transitions between the spin states. Common NMR ...

These techniques are also difficult, and it is unusual to achieve proton line widths less than about 0.5-1 ppm, rather unsatisfactory in comparison with liquid NMR. Once we have suppressed the dipolar ...

Figure 1. 1 H NMR Spectrum of DMA, demonstrating that the two N–methyl groups have different chemical shifts. Image Credit: Nanalysis Corp. Scheme 2. Resonance structures of DMA, the ...

Building on the success of its 1.0-1.2 GHz systems, Bruker's 1.3 GHz NMR spectrometer offers unprecedented resolution and ...