Matthias Zebisch wrote:
Dear bb!
What is the optimal wavelength for Sulfur SAD phasing?
Is it 1.9A or should one go below that to reduce absorption/damage.
Also, would the same wavelength be appropriate to maximize anomalous
scattering to position chlorides, calcium, sulfate in already phased
structures?
Thanks in advance,
Matthias
Hi,
The Sulphur absorption edges are way too far for realistic data
collection (can't remember the precise values right now).
But Sulphur SAD can even be done on a home source (Cu K-alpha), see eg
http://www.stoe.com/pages/brochure/Genix%20Cu%20labnote.pdf
there the precision of measurements is very important.
Fred.
