Dear MS Users,

I want to calculate the projection of Principal Moment (which is Perpendicular to the plane of my molecule, in green) on the plane (red triangle).

This plane (red triangle) is formed by joining the centers of the benzene rings (as in attached picture).

Please help me on this. How can I do that? I wish somebody can provide some existing scripts to do so.

I have already calculated the principal moments and principle axes.

Anant