Spatial Ring Current Model of the [2.2]Paracyclophane Molecule

A representation of the current density induced in the [2.2]paracyclophane molecule by a homogeneous magnetic
field parallel to the line joining the centers of the phenylene rings is given in compact form by a stagnation
graph that conveys essential information. Analogous graphs were obtained for two perpendicular directions.
Plots of streamlines are also reported to complete a ring current model that has been proved useful to understand
the magnetropicity of the system. Stagnation graphs, maps of streamlines and moduli of the current density,
and plots of Biot−Savart magnetic shielding density provide a basic tool kit for rationalizing magnetic response
of complex systems.