planar chirality

This planar chirality arises despite no single atom being a stereogenic centre.

Planar chirality is the special case of chirality for two dimensions.

Planar chirality may also provide for chirality without having an actual chiral center present.

The orientation of the hydroquinone oxygens on both rims of the pillararene allow the macrocycle to exhibit planar chirality.

Planar chirality is also exhibited by molecules like (E)-cyclooctene, some di- or poly-substituted metallocenes, and certain monosubstituted paracyclophanes.

Most fundamentally, planar chirality is a mathematical term, finding use in chemistry, physics and related physical sciences, for example, in astronomy, optics and metamaterials.

Spirals, being essentially two-dimensional objects, cannot be chiral, and planar chirality is an infelicitous term that ought to be replaced by a meaningful term.

This macrocycle is unusual because it was the first compound isolated from nature displaying optical activity solely due to the presence of planar chirality and axial chirality.

The study of planar chiral metamaterials has revealed that planar chirality is associated with an optical effect: the directionally asymmetric transmission (reflection and absorption) of circularly polarized waves.