On-line SEC-MR-NMR hyphenation: optimization of sensitivity and selectivity on a 62 MHz benchtop NMR spectrometer

Real-time reaction monitoring by ultrafast 2D NMR on a benchtop spectrometer.

Reaction monitoring is widely used to follow chemical processes in a broad range of application fields. Recently, the development of robust benchtop NMR spectrometers has brought NMR under the fume hood, making it possible to monitor chemical reactions in a safe and accessible environment. However, these low-field NMR approaches suffer from limited resolution leading to strong peak overlaps, wh...

A theoretical study on methamphetamine: geometry, energies, NMR and NBO

The methamphetamine has been studied theoretically at the MP2 [1]/6-31G[2] level in gas phase.Methamphetamine has been investigated Via NMR, Frequencies Calculation and NBO analysis. Thestructure of methamphetamine was designed primarily using of Chem. Bio Draw and it geometry hasbeen optimized at the MP2/6-31G computational level. The present work consists the study of themethamphetamine repor...

A Theoretical Study on Dopamine: Geometry, energies and NMR

The Dopamine has been studied theoretically at the B3LYP/6-31G* level were performed in gasphase. We calculated physical parameters like atomic charges, energy (=>), asymmetry parameter(?), chemical shift @iso, dipole moment and isotropic NMR determinant and in this work we usedGaussian 03 at NMR and calculation by using B3LYP methods with 6-31G* basis set.

Implementing ultrafast 2D NMR experiments on a Bruker Avance Spectrometer

An Improved Cw Nmr Broad-line Spectrometer Forweak Signal Detection

In the article there is described a frequency-sweep nuclear magnetic resonance (NMR) spectrometer when a static magnetic field runs at a fixed value. The repetitive frequency-sweep of oscillator is realized by a variable frequency divider in the feedback loop of the second-order Phase Locked Loop. The largest advantage of this system for the CW NMR spectrometer is a good possibility of repetiti...