▎ 摘　　要

By means of first-principles calculations, we predict a partially hydrogenated graphene system, C6H2, and find the one in AB-trans configuration is a Dirac material with a tilted anisotropic Dirac cone electronic structure. Different from graphene, in which the Dirac points are located at K and K' and the Fermi surfaces are circular with doping, the AB-trans C6H2 exhibits Dirac points located on the lines from Gamma to M with quasielliptical Fermi surfaces when doped. Around the Dirac point, the Fermi velocity varies along different directions. Therefore, the propagation of charge carriers in this system is highly anisotropic, creating a new tunability for novel transport properties.