[wool]

Hey!
I need some help on how to derive the systematic absences from for example an I-centered lattice using the structure factor. I have scrounged all available textbook including 3 on advanced inorganic chemistry which covers diffraction and crystallography but to no help. One problem is that I suck on mathemathics. Does anobody have some good pointers, maybe website tutorials etc on how to do this? I'm kinda in a hurry so don't have time to order books and I've already checked local libraries.

[AWK]

Can you look into International Tables for Crystallography?

May be start from wk\ikipedia:
http://en.wikipedia.org/wiki/Structure_factor

[wool]

Yes.
Kind of embarrasing but did not even look at the Wikipedia page, and it gave pretty decent information. I think I can puzzle something from here. Thanks!