Ball-and-stick model of the copper coordination environment in the crystal structure of copper(II) sulfate pentahydrate, CuSO ₄ ·5H ₂ O. The structure was reported in Acta Crystallogr. B (1985) 41 , 184–190 and can be accessed as CSD entry 1623803 and ICSD entry 60059.

The structure and the history of its discovery is discussed in IUCrJ (2022) 9 , 73–85 .

Colour code:

Copper, Cu: orange-brown

Sulfur, S: yellow

Oxygen, O: red

Hydrogen, H: white

Hydrogen bonds are represented by dashed black lines.