▎ 摘　　要

The high energy vibrations of hexagonal sheets of BC, BC(3), and BC(7) are calculated and compared with graphene. A high energy "G" vibration (at 1559 cm(-1) in graphene) is similar in the B-C structures. Another high energy "D" vibration (around 1350 cm(-1)) is a mode not found in graphene and is attributed to a vibration that is especially sensitive to B concentration.