D6hsymmetri

D6hsymmetry, also known as D6h symmetry, is a type of symmetry found in molecular and crystalline structures. It is a member of the point group D6h, which is part of the hexagonal crystal system. The symmetry operations in D6h include sixfold rotation (C6), threefold rotation (C2), and reflection (σ) planes. This symmetry is characterized by its sixfold rotational symmetry, which means that the structure appears the same after a rotation of 60 degrees around a central axis. The D6h point group also includes horizontal mirror planes (σh) and vertical mirror planes (σv) that pass through the center of the structure. This symmetry is often found in molecules and crystals with a hexagonal shape, such as benzene and graphite. The D6h symmetry is a special case of the Dnh symmetry, where n=6. The character table for the D6h point group is a useful tool for analyzing the symmetry of molecular orbitals and vibrational modes in structures with D6h symmetry.