Figure 1: 3D chiral polyhedra originated from 2D chiral facial units.
From: Assembled molecular face-rotating polyhedra to transfer chirality from two to three dimensions
(a) Synergetic interactions between the rotating triangular faces in a polyhedron proposed by Buckminster Fuller. (b) All subunits of icosahedral cricket paralysis virus have identical rotational directionality. (c) Truxene building block shown as a ball-and-stick model (red and blue, carbon; white, hydrogen; yellow, oxygen; green, butyl group); its rotation patterns are considered to be either clockwise (C) or anticlockwise (A) when viewed vertical to the aromatic plane. By reacting with ethylene diamine to form an octahedron, the truxene fragment loses its mirror symmetry and becomes a rotational face.
