Table 2 List of SiO2 polymorphs, their space groups and names.

From: Data-driven approach for the prediction and interpretation of core-electron loss spectroscopy

Label

Space group

Name

Polymorph 1

F41/d\(\bar{3}\)2/m

β-Cristobalite

Polymorph 2-1, 2

P63/m2/m2/c

Tridymite

Polymorph 3-1, 2, 3, 4

P6/m2/c2/c

Zeolite

Polymorph 4

P42/n\(\bar{3}\)2/m

Polymorph 5-1, 2

R32

Polymorph 6-1, 2

F2/d2/d2/d

Polymorph 7-1, 2, 3

C12/c1

Polymorph 8-1, 2, 3, 4, 5

C12/c1

Coesite

Polymorph 9

P3121

α-Quartz

Polymorph 10

P3221

Polymorph 11

I\(\bar{4}\)2d

Polymorph 12

P41212

α-Cristobalite

Polymorph 13

P6222

β-Quartz

  1. The second number in the label represents the non-equivalent oxygen sites in the unit cells of the respective polymorphs.