Violanthrone
# Violanthrone

Violanthrone, also known as dibenzanthrone, is an organic compound that serves as a vat dye and a precursor to other vat dyes. X-ray crystallography confirms that the molecule is planar with $C_{2v}$ symmetry. Isomeric with violanthrone is isoviolanthrone, which has a centrosymmetric structure.

## Synthesis

It is produced by coupling of two molecules of benzanthrone.

