Usage:
invert  atom-spec

The invert command exchanges the positions of two substituents of an atom, potentially inverting a chiral center. Substituents of atoms that are not chiral centers can also be swapped. The Invert section of Build Structure is the corresponding graphical interface. See also: chirality

The atom-spec must contain exactly one or two atoms:

• If a single atom is specified, clicking Swap exchanges the positions of its two smallest substituents based on number of atoms, or if those are the same, atomic weights of the atoms directly bonded to the selected atom. Implicit hydrogens on the selected atom are considered, but not those on its substituents. These rules are not meant to reproduce the much more complex “priority” calculations used in chirality determination.
• If two atoms directly bonded to the same central atom are specified, clicking Swap will exchange the positions of the substituents rooted at those atoms.