Allotropes of Phosphorus - Phosphorus Nanorods

Phosphorus nanorods were synthesized as P−
12 polymers in two modifications.

The red-brown phase differs from red phosphorus and is also stable in air for weeks. Electron microscope showed the red-brown form as having long, parallel nanorods with a diameter between 0.34 nm and 0.47 nm.

Properties of some allotropes of phosphorus
Form white(α) white(β) violet black
Symmetry Body-centred cubic Triclinic Monoclinic Orthorhombic
Pearson symbol aP24 mP84 oS8
Space group I43m P1 No.2 P2/c No.13 Cmca No.64
Density (g/cm3) 1.828 1.88 2.36 2.69
Bandgap (eV) 2.1 1.5 0.34
Refractive index 1.8244 2.6 2.4

Read more about this topic:  Allotropes Of Phosphorus