Visualization of J-Coupled NMR Spectra Across Magnetic Fields
This video demonstrates interactive simulation of J-coupled NMR spectra using the SpinSpec platform:
https://nmrspec.org
The example shown here is triethyl phosphate.
The simulation is based on direct diagonalization of the spin Hamiltonian and allows visualization of spectral evolution across different magnetic field conditions — from high-field NMR down to Earth-field regimes.
The current implementation reproduces the main transition structure well even at ultra-low magnetic fields, although transition amplitudes may differ from full density-matrix-based simulations.
The platform is intended for:
• teaching and visualization of spin interactions
• rapid prototyping of spin systems
• comparison of spectra under different magnetic fields
The project is developed with participation of researchers affiliated with Gebze Technical University (Turkey) and Saint Petersburg State University (Russia).
Feedback and suggestions are welcome:
feedback@nmrspec.org