Structure and stability of icosahedral clusters.

Some possible polyhedral cluster structures.	Magic number of icosahedral clusters: 13, 55, 147, 309, 561, 923, 1415…
	Structure of icosahedral clusters:
	Un-uniformed elastic deformation in Lead icosahedral cluster.

The stability of B₆O icosahedral particles in macroscopic size:

Experimental observation:

H. Hubert, et al. Nature, 376-378, 1998

Structure of icosahedral _B6O particles:

	c
The structure of a B12O2 icosahedral particle. Each large circle is a B12 unit and each black dot is an O atom.	The lattice structure of Mackay icosahedra (a), fcc structure (b) and B6O rhombohedral structure (c).

Pressure dependence stability of B₆O icosahedral particles and particles in bulk structure.