Allotrope of carbon, whose structure is a one-atom-thick planar sheet of
\(\ce{sp^{2}{-}bonded}\) carbon atoms in a honeycomb (hexagonal) crystal lattice.
Source: PAC, 2022,
94, 353. (
Glossary of terms used in physical organic chemistry (IUPAC Recommendations 2021)) on page 426 [
Terms] [
Paper]