The developed versions of the program make it possible to obtain model NMR spectra with J-coupling at any values of the magnetic field. As examples, the real proton NMR spectra of triethyl phosphate ...

1.3 GHz 2D solids NMR: Ultra-Fast MAS 160 kHz solid-state NMR of tryptophan synthase (2 x 72 kDa), one of the largest enzymes studied by solid-state NMR. This 1.3 GHz spectrum was achieved with ...

NMR spectroscopy can be used to elucidate structures ... the COSY spectrum clearly shows the presence of proton J-coupling, a key factor in structural determination. The implantation of ...

6,7,8 Figure 5 provides an example of a proton (1 H) NMR ... spectra display peaks that correlate pairs of nuclei that are separated by a maximum of three chemical bonds. This correlation arises from ...

NMR spectroscopy is the use of NMR phenomena to study the physical ... and Charles Slichter at the University of Illinois of spin-spin coupling, a measure of atomic interactions within a molecule. In ...

The coupling constant, denoted as J, is a crucial parameter utilized to describe the interaction between nuclear spins in nuclear magnetic resonance (NMR) spectra and electron spins in electron ...

This type of quantitative forensic spectroscopy is especially useful for the analysis of various psychoactive substances for which reference compounds are expensive. In addition to proton NMR (1 H ...

The properties of these novel porphyrins in nuclear magnetic shielding, the shift, coupling and splitting ... All UV-visible spectra were obtained on a Shimadzu 1601 spectrophotometer. Proton NMR ...

Since additional coupling is not seen ... found to be isobutyric acid. 1 H NMR (42.5 MHz, neat) δ 11.90 (s, 1 H, OH), 2.13 (sept, J = 6.8, 1 H, H-2), 0.73 (d, J = 6.7, 6 H, H-3). The spectrum includes ...