H21(1).mp4 Guide

Zn ions, for example, are located directly on the rotation axis.

Three of these dimer units are arranged around a threefold rotation axis to form a hexamer, which takes the shape of an oblate spheroid.

These spheroids pack in a hexagonal system (rhombohedral shape) to form a crystal. The packing creates a "threefold symmetry axis" (Zn ions). H21(1).mp4

This content is part of a pedagogical resource focusing on teaching crystallographic symmetry, with related, comprehensive information available on the Bilbao Crystallographic Server. How the ? A deeper look into rhombohedral/hexagonal crystal packing ?

Animations, videos and 3D models for teaching space-group symmetry Zn ions, for example, are located directly on

The insulin dimer acts as the asymmetric unit within a crystal structure. It is a "giant" unit because it consists of hundreds of atoms.

Based on the provided search results, the video file "dv5020sup5.mp4" (associated with H21(1) in the context of symmetry) is a visual aid illustrating how a "giant asymmetric unit" behaves under symmetry operations in crystallography. The packing creates a "threefold symmetry axis" (Zn ions)

The minimum structural unit (the dimer) that, when acted upon by space group symmetry operations, generates the full crystal structure.