J-graphs are graphical representations of NMR scalar coupling constants.
VisualVisualization of assigned coupling constants
An on-line dynamic J-graph visualizer of androsten with most coupling constants assigned shows how J-Graph can be used to assign coupling constants.
Demo for manual assignement of coupling constants
J-graphs can be used to facilitate the assignment of homonuclear coupling constants, i.e. make pairs of protons with equal values of J.
J-graph visualizer of androsten with no assigned couplings This is a demo of the guided assignement feature: Double-click on dots if the horizontal line is green when rolling over a dot. The green line is indicating that only one coupling partner is compatible with the structure and the value of the coupling constant.
More info
More details.
See also
For two-dimensional COSY cross-peaks, a two-dimensional representation of coupling constants was introduced. This work is inspired by it. (D. Jeannerat, PhD thesis, Group G. Bodenhausen).
Installation npm install -g browserify browserify src/nodeModules.js -r nmredata > src/browserifiedModules.js