copper oxide plane and brillouin zone

[captain]

I am having trouble understand the crystal structure or copper oxide and what the first brillouin zone looks like.

[ZapperZ]

This is a rather vague statement. What exactly are you having trouble understanding when looking at the crystal structure of this compound? And applying the standard rule, where exactly are you having trouble in deriving the geometry of the Brillouin zone?

Zz.

[Gokul43201]

Also, which coumpound is it: Cu(1+) or Cu(2+) oxide?

And what is the relevance of "plane"?