#120

I-4c2

Example – Be(SO₄)(H₂O)₄

The synergetic effect in beryllium sulfate tetrahydrate – an experimental electron-density study

Kellersohn, T.; Delaplane, R.G.; Olovsson, I.
Acta Cryst. B (1994) 50, p316-p326

 

CIF
http://1drv.ms/1nxj15o

 

BeO4 tetrahedra (green)
SO4 tetrahedra (yellow)

3D rotatable model of Be(SO₄)(H₂O)₄