Assertion: heptagon | /r/HasProperty | composed two pentagons side
Facets:
value: with octagon
type: OTHER
Source sentences:
text: In this work, the geometries and electronic states of two preferable types of divacancy defects in finite-size hexagonal graphene flakes (HGFs) were calculated by self-consistent-charge density-functional tight-binding (SCCDFTB) method for the first time, which are three pentagons and three heptagons composed (555777) divacancy defect structure and two pentagons side with octagon composed (585) structures, respectively.